28392632 has 8 divisors (see below), whose sum is σ = 53236200. Its totient is φ = 14196312.

The previous prime is 28392619. The next prime is 28392641. The reversal of 28392632 is 23629382.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×28392632² = 1612283103774848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28392592 and 28392601.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1774532 + ... + 1774547.

It is an arithmetic number, because the mean of its divisors is an integer number (6654525).

Almost surely, 2^28392632 is an apocalyptic number.

It is an amenable number.

28392632 is a deficient number, since it is larger than the sum of its proper divisors (24843568).

28392632 is a wasteful number, since it uses less digits than its factorization.

28392632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549085 (or 3549081 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 28392632 is about 5328.4737026657. The cubic root of 28392632 is about 305.0716735615.

The spelling of 28392632 in words is "twenty-eight million, three hundred ninety-two thousand, six hundred thirty-two".