28630734 has 32 divisors (see below), whose sum is σ = 62688384. Its totient is φ = 8645280.

The previous prime is 28630717. The next prime is 28630757. The reversal of 28630734 is 43703682.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28630695 and 28630704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24037 + ... + 25199.

It is an arithmetic number, because the mean of its divisors is an integer number (1959012).

Almost surely, 2^28630734 is an apocalyptic number.

28630734 is an abundant number, since it is smaller than the sum of its proper divisors (34057650).

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

28630734 is a wasteful number, since it uses less digits than its factorization.

28630734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 28630734 is about 5350.7694773743. The cubic root of 28630734 is about 305.9220827716.

The spelling of 28630734 in words is "twenty-eight million, six hundred thirty thousand, seven hundred thirty-four".