28190634 has 16 divisors (see below), whose sum is σ = 56455488. Its totient is φ = 9384512.

The previous prime is 28190609. The next prime is 28190653. The reversal of 28190634 is 43609182.

It is a junction number, because it is equal to n+sod(n) for n = 28190595 and 28190604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2674 + ... + 7970.

It is an arithmetic number, because the mean of its divisors is an integer number (3528468).

Almost surely, 2^28190634 is an apocalyptic number.

28190634 is an abundant number, since it is smaller than the sum of its proper divisors (28264854).

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

28190634 is a wasteful number, since it uses less digits than its factorization.

28190634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6189.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 28190634 is about 5309.4852857881. The cubic root of 28190634 is about 304.3464785146.

The spelling of 28190634 in words is "twenty-eight million, one hundred ninety thousand, six hundred thirty-four".