157646740 has 24 divisors (see below), whose sum is σ = 331400160. Its totient is φ = 62993568.

The previous prime is 157646737. The next prime is 157646747. The reversal of 157646740 is 47646751.

It is a junction number, because it is equal to n+sod(n) for n = 157646693 and 157646702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157646747) 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, 18951 + ... + 25969.

It is an arithmetic number, because the mean of its divisors is an integer number (13808340).

Almost surely, 2^157646740 is an apocalyptic number.

157646740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157646740 is an abundant number, since it is smaller than the sum of its proper divisors (173753420).

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

157646740 is a wasteful number, since it uses less digits than its factorization.

157646740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8151 (or 8149 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 157646740 is about 12555.7452984679. The cubic root of 157646740 is about 540.2088127051.

The spelling of 157646740 in words is "one hundred fifty-seven million, six hundred forty-six thousand, seven hundred forty".