157797402 has 16 divisors (see below), whose sum is σ = 360679872. Its totient is φ = 45084960.

The previous prime is 157797371. The next prime is 157797421. The reversal of 157797402 is 204797751.

157797402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 3757081 = 157797402 / (1 + 5 + 7 + 7 + 9 + 7 + 4 + 0 + 2).

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, 1878499 + ... + 1878582.

It is an arithmetic number, because the mean of its divisors is an integer number (22542492).

Almost surely, 2^157797402 is an apocalyptic number.

157797402 is an abundant number, since it is smaller than the sum of its proper divisors (202882470).

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

157797402 is a wasteful number, since it uses less digits than its factorization.

157797402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3757093.

The product of its (nonzero) digits is 123480, while the sum is 42.

The square root of 157797402 is about 12561.7435891679. The cubic root of 157797402 is about 540.3808493026.

The spelling of 157797402 in words is "one hundred fifty-seven million, seven hundred ninety-seven thousand, four hundred two".