Search a number
-
+
148968720 = 243557997
BaseRepresentation
bin10001110000100…
…01010100010000
3101101022101200000
420320101110100
5301113444340
622440530000
73456133065
oct1070212420
9341271600
10148968720
11770a844a
1241a80900
1324b2a694
1415adac6c
15d128d30
hex8e11510

148968720 has 240 divisors, whose sum is σ = 530799360. Its totient is φ = 38817792.

The previous prime is 148968719. The next prime is 148968779. The reversal of 148968720 is 27869841.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1535712 + ... + 1535808.

It is an arithmetic number, because the mean of its divisors is an integer number (2211664).

Almost surely, 2148968720 is an apocalyptic number.

148968720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 148968720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265399680).

148968720 is an abundant number, since it is smaller than the sum of its proper divisors (381830640).

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

148968720 is an equidigital number, since it uses as much as digits as its factorization.

148968720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 148968720 is about 12205.2742697573. The cubic root of 148968720 is about 530.1088182875.

The spelling of 148968720 in words is "one hundred forty-eight million, nine hundred sixty-eight thousand, seven hundred twenty".