28461684 has 24 divisors (see below), whose sum is σ = 66608640. Its totient is φ = 9458944.

The previous prime is 28461637. The next prime is 28461691. The reversal of 28461684 is 48616482.

It is a super-2 number, since 2×28461684² = 1620134912231712, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 877 + ... + 7595.

It is an arithmetic number, because the mean of its divisors is an integer number (2775360).

Almost surely, 2^28461684 is an apocalyptic number.

It is an amenable number.

28461684 is an abundant number, since it is smaller than the sum of its proper divisors (38146956).

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

28461684 is a wasteful number, since it uses less digits than its factorization.

28461684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7079 (or 7077 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 28461684 is about 5334.9492968537. The cubic root of 28461684 is about 305.3187887828.

The spelling of 28461684 in words is "twenty-eight million, four hundred sixty-one thousand, six hundred eighty-four".