8420524 has 12 divisors (see below), whose sum is σ = 16841104. Its totient is φ = 3608784.

The previous prime is 8420521. The next prime is 8420543. The reversal of 8420524 is 4250248.

It is a happy number.

8420524 is an admirable number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (8420521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150339 + ... + 150394.

Almost surely, 2^8420524 is an apocalyptic number.

It is an amenable number.

8420524 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8420524 is a wasteful number, since it uses less digits than its factorization.

8420524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300744 (or 300742 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 8420524 is about 2901.8139154674. The cubic root of 8420524 is about 203.4446963798. Note that the first 3 decimals are identical.

The spelling of 8420524 in words is "eight million, four hundred twenty thousand, five hundred twenty-four".