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148356520 = 23513285301
BaseRepresentation
bin10001101011110…
…11110110101000
3101100011021212221
420311323312220
5300434402040
622415443424
73451003204
oct1065736650
9340137787
10148356520
117681a4a4
1241826574
1324974b30
14159bbb04
15d05774a
hex8d7bda8

148356520 has 32 divisors (see below), whose sum is σ = 359480520. Its totient is φ = 54777600.

The previous prime is 148356497. The next prime is 148356529. The reversal of 148356520 is 25653841.

It can be written as a sum of positive squares in 4 ways, for example, as 101324356 + 47032164 = 10066^2 + 6858^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (148356529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142131 + ... + 143170.

Almost surely, 2148356520 is an apocalyptic number.

148356520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

148356520 is an abundant number, since it is smaller than the sum of its proper divisors (211124000).

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

148356520 is a wasteful number, since it uses less digits than its factorization.

148356520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285325 (or 285321 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 148356520 is about 12180.1691285466. The cubic root of 148356520 is about 529.3816450451.

The spelling of 148356520 in words is "one hundred forty-eight million, three hundred fifty-six thousand, five hundred twenty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 285301 570602 1141204 1426505 2282408 2853010 3708913 5706020 7417826 11412040 14835652 18544565 29671304 37089130 74178260 148356520