28612668 has 36 divisors (see below), whose sum is σ = 77664552. Its totient is φ = 8174880.

The previous prime is 28612663. The next prime is 28612691. The reversal of 28612668 is 86621682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28612663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23743 + ... + 24918.

Almost surely, 2^28612668 is an apocalyptic number.

28612668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28612668 is an abundant number, since it is smaller than the sum of its proper divisors (49051884).

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

28612668 is a wasteful number, since it uses less digits than its factorization.

28612668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48682 (or 48673 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 28612668 is about 5349.0810425717. The cubic root of 28612668 is about 305.8577235970.

The spelling of 28612668 in words is "twenty-eight million, six hundred twelve thousand, six hundred sixty-eight".