157920274 has 8 divisors (see below), whose sum is σ = 242658108. Its totient is φ = 77034240.

The previous prime is 157920251. The next prime is 157920299. The reversal of 157920274 is 472029751.

It can be written as a sum of positive squares in 2 ways, for example, as 138180025 + 19740249 = 11755^2 + 4443^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962847 + ... + 963010.

Almost surely, 2^157920274 is an apocalyptic number.

157920274 is a deficient number, since it is larger than the sum of its proper divisors (84737834).

157920274 is a wasteful number, since it uses less digits than its factorization.

157920274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925900.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 157920274 is about 12566.6333598144. The cubic root of 157920274 is about 540.5210722475.

The spelling of 157920274 in words is "one hundred fifty-seven million, nine hundred twenty thousand, two hundred seventy-four".