28889976 has 32 divisors (see below), whose sum is σ = 73100160. Its totient is φ = 9513312.

The previous prime is 28889963. The next prime is 28889989. The reversal of 28889976 is 67998882.

It is an interprime number because it is at equal distance from previous prime (28889963) and next prime (28889989).

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, 5260 + ... + 9243.

It is an arithmetic number, because the mean of its divisors is an integer number (2284380).

Almost surely, 2^28889976 is an apocalyptic number.

It is an amenable number.

28889976 is an abundant number, since it is smaller than the sum of its proper divisors (44210184).

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

28889976 is a wasteful number, since it uses less digits than its factorization.

28889976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14595 (or 14591 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 57.

The square root of 28889976 is about 5374.9396275679. The cubic root of 28889976 is about 306.8426515623.

The spelling of 28889976 in words is "twenty-eight million, eight hundred eighty-nine thousand, nine hundred seventy-six".