28546290 has 32 divisors (see below), whose sum is σ = 76124160. Its totient is φ = 7612272.

The previous prime is 28546253. The next prime is 28546307. The reversal of 28546290 is 9264582.

It is a happy number.

28546290 is a `hidden beast` number, since 28 + 5 + 4 + 629 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52594 + ... + 53133.

It is an arithmetic number, because the mean of its divisors is an integer number (2378880).

Almost surely, 2^28546290 is an apocalyptic number.

28546290 is an abundant number, since it is smaller than the sum of its proper divisors (47577870).

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

28546290 is a wasteful number, since it uses less digits than its factorization.

28546290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105743 (or 105737 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 28546290 is about 5342.8728227425. The cubic root of 28546290 is about 305.6210225686.

The spelling of 28546290 in words is "twenty-eight million, five hundred forty-six thousand, two hundred ninety".