157804228 has 6 divisors (see below), whose sum is σ = 276157406. Its totient is φ = 78902112.

The previous prime is 157804201. The next prime is 157804237. The reversal of 157804228 is 822408751.

It can be written as a sum of positive squares in only one way, i.e., 114875524 + 42928704 = 10718^2 + 6552^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19725525 + ... + 19725532.

Almost surely, 2^157804228 is an apocalyptic number.

It is an amenable number.

157804228 is a deficient number, since it is larger than the sum of its proper divisors (118353178).

157804228 is a wasteful number, since it uses less digits than its factorization.

157804228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39451061 (or 39451059 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 157804228 is about 12562.0152841811. The cubic root of 157804228 is about 540.3886411218.

The spelling of 157804228 in words is "one hundred fifty-seven million, eight hundred four thousand, two hundred twenty-eight".