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152255540 = 2257612777
BaseRepresentation
bin10010001001100…
…11110000110100
3101121111101100002
421010303300310
5302434134130
623035210432
73526102463
oct1104636064
9347441302
10152255540
1178a42928
1242ba6a18
132570b748
14163149da
15d577b45
hex9133c34

152255540 has 12 divisors (see below), whose sum is σ = 319736676. Its totient is φ = 60902208.

The previous prime is 152255533. The next prime is 152255549. The reversal of 152255540 is 45552251.

It can be written as a sum of positive squares in 2 ways, for example, as 45670564 + 106584976 = 6758^2 + 10324^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152255549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3806369 + ... + 3806408.

It is an arithmetic number, because the mean of its divisors is an integer number (26644723).

Almost surely, 2152255540 is an apocalyptic number.

152255540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

152255540 is an abundant number, since it is smaller than the sum of its proper divisors (167481136).

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

152255540 is a wasteful number, since it uses less digits than its factorization.

152255540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7612786 (or 7612784 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 152255540 is about 12339.1871693398. The cubic root of 152255540 is about 533.9792339505.

The spelling of 152255540 in words is "one hundred fifty-two million, two hundred fifty-five thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 7612777 15225554 30451108 38063885 76127770 152255540