156157730 has 8 divisors (see below), whose sum is σ = 281083932. Its totient is φ = 62463088.

The previous prime is 156157697. The next prime is 156157753. The reversal of 156157730 is 37751651.

It can be written as a sum of positive squares in 2 ways, for example, as 153338689 + 2819041 = 12383^2 + 1679^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7807877 + ... + 7807896.

Almost surely, 2^156157730 is an apocalyptic number.

156157730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156157730 is a deficient number, since it is larger than the sum of its proper divisors (124926202).

156157730 is a wasteful number, since it uses less digits than its factorization.

156157730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15615780.

The product of its (nonzero) digits is 22050, while the sum is 35.

The square root of 156157730 is about 12496.3086549589. The cubic root of 156157730 is about 538.5026304642.

The spelling of 156157730 in words is "one hundred fifty-six million, one hundred fifty-seven thousand, seven hundred thirty".