157664240 has 40 divisors (see below), whose sum is σ = 367684800. Its totient is φ = 62873856.

The previous prime is 157664231. The next prime is 157664279. The reversal of 157664240 is 42466751.

157664240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 157664240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25097 + ... + 30743.

It is an arithmetic number, because the mean of its divisors is an integer number (9192120).

Almost surely, 2^157664240 is an apocalyptic number.

157664240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157664240 is an abundant number, since it is smaller than the sum of its proper divisors (210020560).

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

157664240 is a wasteful number, since it uses less digits than its factorization.

157664240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6009 (or 6003 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 157664240 is about 12556.4421712522. The cubic root of 157664240 is about 540.2288010758.

The spelling of 157664240 in words is "one hundred fifty-seven million, six hundred sixty-four thousand, two hundred forty".