157049640 has 96 divisors (see below), whose sum is σ = 556826400. Its totient is φ = 38071680.

The previous prime is 157049623. The next prime is 157049677. The reversal of 157049640 is 46940751.

157049640 is a `hidden beast` number, since 1 + 5 + 7 + 0 + 4 + 9 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 157049595 and 157049604.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15870 + ... + 23789.

It is an arithmetic number, because the mean of its divisors is an integer number (5800275).

Almost surely, 2^157049640 is an apocalyptic number.

157049640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157049640 is an abundant number, since it is smaller than the sum of its proper divisors (399776760).

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

157049640 is a wasteful number, since it uses less digits than its factorization.

157049640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39687 (or 39680 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 157049640 is about 12531.9447812381. The cubic root of 157049640 is about 539.5259213656.

The spelling of 157049640 in words is "one hundred fifty-seven million, forty-nine thousand, six hundred forty".