28941528 has 64 divisors (see below), whose sum is σ = 90213120. Its totient is φ = 7516800.

The previous prime is 28941499. The next prime is 28941529. The reversal of 28941528 is 82514982.

It is a super-2 number, since 2×28941528² = 1675224085949568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28941529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5983 + ... + 9678.

It is an arithmetic number, because the mean of its divisors is an integer number (1409580).

Almost surely, 2^28941528 is an apocalyptic number.

28941528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28941528 is an abundant number, since it is smaller than the sum of its proper divisors (61271592).

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

28941528 is a wasteful number, since it uses less digits than its factorization.

28941528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15688 (or 15684 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 28941528 is about 5379.7330788804. The cubic root of 28941528 is about 307.0250556922.

The spelling of 28941528 in words is "twenty-eight million, nine hundred forty-one thousand, five hundred twenty-eight".