20451298 has 16 divisors (see below), whose sum is σ = 35806464. Its totient is φ = 8578080.

The previous prime is 20451271. The next prime is 20451311. The reversal of 20451298 is 89215402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14883 + ... + 16198.

It is an arithmetic number, because the mean of its divisors is an integer number (2237904).

Almost surely, 2^20451298 is an apocalyptic number.

20451298 is a deficient number, since it is larger than the sum of its proper divisors (15355166).

20451298 is a wasteful number, since it uses less digits than its factorization.

20451298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31137.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 20451298 is about 4522.3111348071. The cubic root of 20451298 is about 273.4682799179.

The spelling of 20451298 in words is "twenty million, four hundred fifty-one thousand, two hundred ninety-eight".