28902088 has 8 divisors (see below), whose sum is σ = 54191430. Its totient is φ = 14451040.

The previous prime is 28902077. The next prime is 28902101. The reversal of 28902088 is 88020982.

It can be written as a sum of positive squares in only one way, i.e., 18130564 + 10771524 = 4258^2 + 3282^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1806373 + ... + 1806388.

Almost surely, 2^28902088 is an apocalyptic number.

It is an amenable number.

28902088 is a deficient number, since it is larger than the sum of its proper divisors (25289342).

28902088 is a wasteful number, since it uses less digits than its factorization.

28902088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612767 (or 3612763 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 28902088 is about 5376.0662198303. The cubic root of 28902088 is about 306.8855263983.

It can be divided in two parts, 2 and 8902088, that added together give a triangular number (8902090 = T₄₂₁₉).

The spelling of 28902088 in words is "twenty-eight million, nine hundred two thousand, eighty-eight".