157538770 has 8 divisors (see below), whose sum is σ = 283569804. Its totient is φ = 63015504.

The previous prime is 157538741. The next prime is 157538803. The reversal of 157538770 is 77835751.

It can be written as a sum of positive squares in 2 ways, for example, as 155825289 + 1713481 = 12483^2 + 1309^2 .

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

It is a super-2 number, since 2×157538770² = 49636928106225800, which contains 22 as substring.

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, 7876929 + ... + 7876948.

Almost surely, 2^157538770 is an apocalyptic number.

157538770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157538770 is a deficient number, since it is larger than the sum of its proper divisors (126031034).

157538770 is a wasteful number, since it uses less digits than its factorization.

157538770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15753884.

The product of its (nonzero) digits is 205800, while the sum is 43.

The square root of 157538770 is about 12551.4449367394. Note that the first 3 decimals coincide. The cubic root of 157538770 is about 540.0854574401.

The spelling of 157538770 in words is "one hundred fifty-seven million, five hundred thirty-eight thousand, seven hundred seventy".