157220234 has 8 divisors (see below), whose sum is σ = 235972548. Its totient is φ = 78562720.

The previous prime is 157220227. The next prime is 157220243. The reversal of 157220234 is 432022751.

It can be written as a sum of positive squares in 2 ways, for example, as 137992009 + 19228225 = 11747^2 + 4385^2 .

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19397 + ... + 26280.

Almost surely, 2^157220234 is an apocalyptic number.

157220234 is a deficient number, since it is larger than the sum of its proper divisors (78752314).

157220234 is a wasteful number, since it uses less digits than its factorization.

157220234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47400.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 157220234 is about 12538.7492996710. The cubic root of 157220234 is about 539.7212026776.

Adding to 157220234 its reverse (432022751), we get a palindrome (589242985).

The spelling of 157220234 in words is "one hundred fifty-seven million, two hundred twenty thousand, two hundred thirty-four".