28628902 has 16 divisors (see below), whose sum is σ = 43502400. Its totient is φ = 14129640.

The previous prime is 28628891. The next prime is 28628909. The reversal of 28628902 is 20982682.

It is a super-2 number, since 2×28628902² = 1639228059451208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28628909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75349 + ... + 75727.

It is an arithmetic number, because the mean of its divisors is an integer number (2718900).

Almost surely, 2^28628902 is an apocalyptic number.

28628902 is a deficient number, since it is larger than the sum of its proper divisors (14873498).

28628902 is a wasteful number, since it uses less digits than its factorization.

28628902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 28628902 is about 5350.5982843043. The cubic root of 28628902 is about 305.9155576017.

The spelling of 28628902 in words is "twenty-eight million, six hundred twenty-eight thousand, nine hundred two".