20524998 has 32 divisors (see below), whose sum is σ = 44416512. Its totient is φ = 6285600.

The previous prime is 20524991. The next prime is 20525009. The reversal of 20524998 is 89942502.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20524991) 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, 20653 + ... + 21623.

It is an arithmetic number, because the mean of its divisors is an integer number (1388016).

Almost surely, 2^20524998 is an apocalyptic number.

20524998 is an abundant number, since it is smaller than the sum of its proper divisors (23891514).

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

20524998 is a wasteful number, since it uses less digits than its factorization.

20524998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 20524998 is about 4530.4522953012. The cubic root of 20524998 is about 273.7963837919.

The spelling of 20524998 in words is "twenty million, five hundred twenty-four thousand, nine hundred ninety-eight".