20499450 has 48 divisors (see below), whose sum is σ = 53835840. Its totient is φ = 5144320.

The previous prime is 20499449. The next prime is 20499481. The reversal of 20499450 is 5499402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1470 + ... + 6569.

It is an arithmetic number, because the mean of its divisors is an integer number (1121580).

Almost surely, 2^20499450 is an apocalyptic number.

20499450 is an abundant number, since it is smaller than the sum of its proper divisors (33336390).

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

20499450 is a wasteful number, since it uses less digits than its factorization.

20499450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8071 (or 8066 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 20499450 is about 4527.6318313220. The cubic root of 20499450 is about 273.6827361270.

The spelling of 20499450 in words is "twenty million, four hundred ninety-nine thousand, four hundred fifty".