28647356 has 12 divisors (see below), whose sum is σ = 51355920. Its totient is φ = 13974240.

The previous prime is 28647349. The next prime is 28647371. The reversal of 28647356 is 65374682.

It is a happy number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87176 + ... + 87503.

It is an arithmetic number, because the mean of its divisors is an integer number (4279660).

Almost surely, 2^28647356 is an apocalyptic number.

It is an amenable number.

28647356 is a deficient number, since it is larger than the sum of its proper divisors (22708564).

28647356 is a wasteful number, since it uses less digits than its factorization.

28647356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174724 (or 174722 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 28647356 is about 5352.3224865473. The cubic root of 28647356 is about 305.9812738622.

The spelling of 28647356 in words is "twenty-eight million, six hundred forty-seven thousand, three hundred fifty-six".