83630428 has 12 divisors (see below), whose sum is σ = 167260912. Its totient is φ = 35841600.

The previous prime is 83630423. The next prime is 83630431. The reversal of 83630428 is 82403638.

83630428 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 83630393 and 83630402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83630423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1493373 + ... + 1493428.

Almost surely, 2^83630428 is an apocalyptic number.

It is an amenable number.

83630428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

83630428 is a wasteful number, since it uses less digits than its factorization.

83630428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986812 (or 2986810 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 83630428 is about 9144.9673591544. The cubic root of 83630428 is about 437.3086889266.

The spelling of 83630428 in words is "eighty-three million, six hundred thirty thousand, four hundred twenty-eight".