156663040 has 36 divisors (see below), whose sum is σ = 375260004. Its totient is φ = 62664704.

The previous prime is 156662983. The next prime is 156663047. The reversal of 156663040 is 40366651.

It can be written as a sum of positive squares in 2 ways, for example, as 60466176 + 96196864 = 7776^2 + 9808^2 .

It is a junction number, because it is equal to n+sod(n) for n = 156662993 and 156663011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156663047) 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, 59917 + ... + 62476.

It is an arithmetic number, because the mean of its divisors is an integer number (10423889).

Almost surely, 2^156663040 is an apocalyptic number.

156663040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156663040 is an abundant number, since it is smaller than the sum of its proper divisors (218596964).

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

156663040 is an equidigital number, since it uses as much as digits as its factorization.

156663040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122414 (or 122400 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 156663040 is about 12516.5106958769. The cubic root of 156663040 is about 539.0828510387.

The spelling of 156663040 in words is "one hundred fifty-six million, six hundred sixty-three thousand, forty".