524989820 has 12 divisors (see below), whose sum is σ = 1102478664. Its totient is φ = 209995920.

The previous prime is 524989807. The next prime is 524989837. The reversal of 524989820 is 28989425.

It is a super-2 number, since 2×524989820² = 551228622207264800, which contains 22 as substring.

It is a congruent number.

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, 13124726 + ... + 13124765.

It is an arithmetic number, because the mean of its divisors is an integer number (91873222).

Almost surely, 2^524989820 is an apocalyptic number.

It is an amenable number.

524989820 is an abundant number, since it is smaller than the sum of its proper divisors (577488844).

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

524989820 is a wasteful number, since it uses less digits than its factorization.

524989820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26249500 (or 26249498 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 524989820 is about 22912.6563278901. The cubic root of 524989820 is about 806.7091087869.

The spelling of 524989820 in words is "five hundred twenty-four million, nine hundred eighty-nine thousand, eight hundred twenty".