158812228 has 6 divisors (see below), whose sum is σ = 277921406. Its totient is φ = 79406112.

The previous prime is 158812193. The next prime is 158812231. The reversal of 158812228 is 822218851.

It can be written as a sum of positive squares in only one way, i.e., 105842944 + 52969284 = 10288^2 + 7278^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19851525 + ... + 19851532.

Almost surely, 2^158812228 is an apocalyptic number.

It is an amenable number.

158812228 is a deficient number, since it is larger than the sum of its proper divisors (119109178).

158812228 is a wasteful number, since it uses less digits than its factorization.

158812228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39703061 (or 39703059 counting only the distinct ones).

The product of its digits is 20480, while the sum is 37.

The square root of 158812228 is about 12602.0723692574. The cubic root of 158812228 is about 541.5368064659.

The spelling of 158812228 in words is "one hundred fifty-eight million, eight hundred twelve thousand, two hundred twenty-eight".