613996428 has 12 divisors (see below), whose sum is σ = 1432658360. Its totient is φ = 204665472.

The previous prime is 613996417. The next prime is 613996459. The reversal of 613996428 is 824699316.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×613996428² = 753983227193518368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25583173 + ... + 25583196.

Almost surely, 2^613996428 is an apocalyptic number.

It is an amenable number.

613996428 is an abundant number, since it is smaller than the sum of its proper divisors (818661932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613996428 is a wasteful number, since it uses less digits than its factorization.

613996428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51166376 (or 51166374 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 613996428 is about 24778.9513095288. The cubic root of 613996428 is about 849.9406777515.

The spelling of 613996428 in words is "six hundred thirteen million, nine hundred ninety-six thousand, four hundred twenty-eight".