612136828 has 24 divisors (see below), whose sum is σ = 1096510688. Its totient is φ = 298930176.

The previous prime is 612136823. The next prime is 612136829. The reversal of 612136828 is 828631216.

It is a happy number.

It is a super-2 number, since 2×612136828² = 749422992387803168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612136823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19900 + ... + 40252.

Almost surely, 2^612136828 is an apocalyptic number.

It is an amenable number.

612136828 is a deficient number, since it is larger than the sum of its proper divisors (484373860).

612136828 is a wasteful number, since it uses less digits than its factorization.

612136828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20533 (or 20531 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 612136828 is about 24741.3990711924. The cubic root of 612136828 is about 849.0817433108.

The spelling of 612136828 in words is "six hundred twelve million, one hundred thirty-six thousand, eight hundred twenty-eight".