157271690 has 16 divisors (see below), whose sum is σ = 284515200. Its totient is φ = 62591760.

The previous prime is 157271659. The next prime is 157271717. The reversal of 157271690 is 96172751.

It is a super-2 number, since 2×157271690² = 49468768950912200, which contains 22 as substring.

It is a Curzon 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, 37526 + ... + 41505.

It is an arithmetic number, because the mean of its divisors is an integer number (17782200).

Almost surely, 2^157271690 is an apocalyptic number.

157271690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157271690 is a deficient number, since it is larger than the sum of its proper divisors (127243510).

157271690 is a wasteful number, since it uses less digits than its factorization.

157271690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79237.

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 157271690 is about 12540.8010110997. The cubic root of 157271690 is about 539.7800773408.

The spelling of 157271690 in words is "one hundred fifty-seven million, two hundred seventy-one thousand, six hundred ninety".