20162490 has 32 divisors (see below), whose sum is σ = 50495616. Its totient is φ = 5142720.

The previous prime is 20162489. The next prime is 20162501. The reversal of 20162490 is 9426102.

It is a self number, because there is not a number n which added to its sum of digits gives 20162490.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13921 + ... + 15300.

It is an arithmetic number, because the mean of its divisors is an integer number (1577988).

Almost surely, 2^20162490 is an apocalyptic number.

20162490 is an abundant number, since it is smaller than the sum of its proper divisors (30333126).

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

20162490 is a wasteful number, since it uses less digits than its factorization.

20162490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29254.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 20162490 is about 4490.2661391058. The cubic root of 20162490 is about 272.1748893285.

Adding to 20162490 its reverse (9426102), we get a palindrome (29588592).

The spelling of 20162490 in words is "twenty million, one hundred sixty-two thousand, four hundred ninety".