28524620 has 12 divisors (see below), whose sum is σ = 59901744. Its totient is φ = 11409840.

The previous prime is 28524497. The next prime is 28524631. The reversal of 28524620 is 2642582.

It is a super-2 number, since 2×28524620² = 1627307892288800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713096 + ... + 713135.

It is an arithmetic number, because the mean of its divisors is an integer number (4991812).

Almost surely, 2^28524620 is an apocalyptic number.

28524620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28524620 is an abundant number, since it is smaller than the sum of its proper divisors (31377124).

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

28524620 is a wasteful number, since it uses less digits than its factorization.

28524620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426240 (or 1426238 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 28524620 is about 5340.8445025108. The cubic root of 28524620 is about 305.5436688611.

The spelling of 28524620 in words is "twenty-eight million, five hundred twenty-four thousand, six hundred twenty".