28647696 has 160 divisors (see below), whose sum is σ = 96565248. Its totient is φ = 7096320.

The previous prime is 28647677. The next prime is 28647709. The reversal of 28647696 is 69674682.

It is a super-2 number, since 2×28647696² = 1641380972216832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84840 + ... + 85176.

Almost surely, 2^28647696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28647696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48282624).

28647696 is an abundant number, since it is smaller than the sum of its proper divisors (67917552).

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

28647696 is a wasteful number, since it uses less digits than its factorization.

28647696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 383 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 28647696 is about 5352.3542483659. The cubic root of 28647696 is about 305.9824843663.

The spelling of 28647696 in words is "twenty-eight million, six hundred forty-seven thousand, six hundred ninety-six".