20902024 has 64 divisors (see below), whose sum is σ = 46730880. Its totient is φ = 8712000.

The previous prime is 20902019. The next prime is 20902031. The reversal of 20902024 is 42020902.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20901992 and 20902010.

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, 138349 + ... + 138499.

It is an arithmetic number, because the mean of its divisors is an integer number (730170).

Almost surely, 2^20902024 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 20902024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23365440).

20902024 is an abundant number, since it is smaller than the sum of its proper divisors (25828856).

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

20902024 is a wasteful number, since it uses less digits than its factorization.

20902024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20902024 is about 4571.8731390974. The cubic root of 20902024 is about 275.4626877575.

Adding to 20902024 its reverse (42020902), we get a palindrome (62922926).

It can be divided in two parts, 2090 and 2024, that added together give a palindrome (4114).

The spelling of 20902024 in words is "twenty million, nine hundred two thousand, twenty-four".