28902888 has 48 divisors (see below), whose sum is σ = 89462880. Its totient is φ = 8257824.

The previous prime is 28902869. The next prime is 28902899. The reversal of 28902888 is 88820982.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28170 + ... + 29177.

It is an arithmetic number, because the mean of its divisors is an integer number (1863810).

Almost surely, 2^28902888 is an apocalyptic number.

28902888 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28902888 is an abundant number, since it is smaller than the sum of its proper divisors (60559992).

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

28902888 is a wasteful number, since it uses less digits than its factorization.

28902888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57366 (or 57359 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 28902888 is about 5376.1406231608. The cubic root of 28902888 is about 306.8883578679. Note that the first 3 decimals are identical.

It can be divided in two parts, 2890 and 2888, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 28902888 in words is "twenty-eight million, nine hundred two thousand, eight hundred eighty-eight".