28402634 has 32 divisors (see below), whose sum is σ = 47900160. Its totient is φ = 12542400.

The previous prime is 28402613. The next prime is 28402651. The reversal of 28402634 is 43620482.

It is a junction number, because it is equal to n+sod(n) for n = 28402597 and 28402606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105452 + ... + 105720.

It is an arithmetic number, because the mean of its divisors is an integer number (1496880).

Almost surely, 2^28402634 is an apocalyptic number.

28402634 is a deficient number, since it is larger than the sum of its proper divisors (19497526).

28402634 is a wasteful number, since it uses less digits than its factorization.

28402634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 28402634 is about 5329.4121627061. The cubic root of 28402634 is about 305.1074923454.

The spelling of 28402634 in words is "twenty-eight million, four hundred two thousand, six hundred thirty-four".