20238976 has 64 divisors (see below), whose sum is σ = 43623360. Its totient is φ = 9318400.

The previous prime is 20238973. The next prime is 20238989. The reversal of 20238976 is 67983202.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×20238976² = 819232299057152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20238973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154431 + ... + 154561.

It is an arithmetic number, because the mean of its divisors is an integer number (681615).

Almost surely, 2^20238976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20238976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21811680).

20238976 is an abundant number, since it is smaller than the sum of its proper divisors (23384384).

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

20238976 is a wasteful number, since it uses less digits than its factorization.

20238976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 20238976 is about 4498.7749443599. The cubic root of 20238976 is about 272.5186183727.

The spelling of 20238976 in words is "twenty million, two hundred thirty-eight thousand, nine hundred seventy-six".