20922748 has 24 divisors (see below), whose sum is σ = 45650304. Its totient is φ = 8151600.

The previous prime is 20922739. The next prime is 20922761. The reversal of 20922748 is 84722902.

It is a super-2 number, since 2×20922748² = 875522767743008, which contains 22 as substring.

It is a congruent number.

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, 33658 + ... + 34273.

It is an arithmetic number, because the mean of its divisors is an integer number (1902096).

Almost surely, 2^20922748 is an apocalyptic number.

20922748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20922748 is an abundant number, since it is smaller than the sum of its proper divisors (24727556).

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

20922748 is a wasteful number, since it uses less digits than its factorization.

20922748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67953 (or 67951 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 20922748 is about 4574.1390446728. The cubic root of 20922748 is about 275.5536965372.

The spelling of 20922748 in words is "twenty million, nine hundred twenty-two thousand, seven hundred forty-eight".