157612228 has 6 divisors (see below), whose sum is σ = 275821406. Its totient is φ = 78806112.

The previous prime is 157612199. The next prime is 157612249. The reversal of 157612228 is 822216751.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 106461124 + 51151104 = 10318^2 + 7152^2 .

It is a super-2 number, since 2×157612228² = 49683228830247968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 157612193 and 157612202.

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 as a sum of consecutive naturals, namely, 19701525 + ... + 19701532.

Almost surely, 2^157612228 is an apocalyptic number.

It is an amenable number.

157612228 is a deficient number, since it is larger than the sum of its proper divisors (118209178).

157612228 is a wasteful number, since it uses less digits than its factorization.

157612228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39403061 (or 39403059 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 157612228 is about 12554.3708723297. The cubic root of 157612228 is about 540.1693890181.

Adding to 157612228 its reverse (822216751), we get a palindrome (979828979).

The spelling of 157612228 in words is "one hundred fifty-seven million, six hundred twelve thousand, two hundred twenty-eight".