157222904 has 8 divisors (see below), whose sum is σ = 294792960. Its totient is φ = 78611448.

The previous prime is 157222883. The next prime is 157222907. The reversal of 157222904 is 409222751.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157222907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9826424 + ... + 9826439.

It is an arithmetic number, because the mean of its divisors is an integer number (36849120).

Almost surely, 2^157222904 is an apocalyptic number.

It is an amenable number.

157222904 is a deficient number, since it is larger than the sum of its proper divisors (137570056).

157222904 is a wasteful number, since it uses less digits than its factorization.

157222904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19652869 (or 19652865 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 157222904 is about 12538.8557691681. The cubic root of 157222904 is about 539.7242579406.

The spelling of 157222904 in words is "one hundred fifty-seven million, two hundred twenty-two thousand, nine hundred four".