1535474228 has 6 divisors (see below), whose sum is σ = 2687079906. Its totient is φ = 767737112.

The previous prime is 1535474209. The next prime is 1535474243. The reversal of 1535474228 is 8224745351.

It can be written as a sum of positive squares in only one way, i.e., 1304798884 + 230675344 = 36122^2 + 15188^2 .

It is a super-2 number, since 2×1535474228² = 4715362209704391968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191934275 + ... + 191934282.

It is an arithmetic number, because the mean of its divisors is an integer number (447846651).

Almost surely, 2^1535474228 is an apocalyptic number.

It is an amenable number.

1535474228 is a deficient number, since it is larger than the sum of its proper divisors (1151605678).

1535474228 is a wasteful number, since it uses less digits than its factorization.

1535474228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383868561 (or 383868559 counting only the distinct ones).

The product of its digits is 268800, while the sum is 41.

The square root of 1535474228 is about 39185.1276379190. The cubic root of 1535474228 is about 1153.6679928816.

The spelling of 1535474228 in words is "one billion, five hundred thirty-five million, four hundred seventy-four thousand, two hundred twenty-eight".