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148343972 = 2272172112
BaseRepresentation
bin10001101011110…
…00110010100100
3101100010122200012
420311320302210
5300434001342
622415305352
73450621500
oct1065706244
9340118605
10148343972
1176811027
124181b258
132496c1ca
14159b7300
15d053b82
hex8d78ca4

148343972 has 54 divisors (see below), whose sum is σ = 321272406. Its totient is φ = 59552640.

The previous prime is 148343971. The next prime is 148344037. The reversal of 148343972 is 279343841.

It can be written as a sum of positive squares in only one way, i.e., 139617856 + 8726116 = 11816^2 + 2954^2 .

It is not an unprimeable number, because it can be changed into a prime (148343971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 702947 + ... + 703157.

It is an arithmetic number, because the mean of its divisors is an integer number (5949489).

Almost surely, 2148343972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 148343972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160636203).

148343972 is an abundant number, since it is smaller than the sum of its proper divisors (172928434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

148343972 is a wasteful number, since it uses less digits than its factorization.

148343972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 237 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 148343972 is about 12179.6540180746. The cubic root of 148343972 is about 529.3667195845.

The spelling of 148343972 in words is "one hundred forty-eight million, three hundred forty-three thousand, nine hundred seventy-two".

Divisors: 1 2 4 7 14 17 28 34 49 68 98 119 196 211 238 422 476 833 844 1477 1666 2954 3332 3587 5908 7174 10339 14348 20678 25109 41356 44521 50218 89042 100436 175763 178084 311647 351526 623294 703052 756857 1246588 1513714 2181529 3027428 4363058 5297999 8726116 10595998 21191996 37085993 74171986 148343972