20922750 has 96 divisors (see below), whose sum is σ = 60012576. Its totient is φ = 5241600.

The previous prime is 20922739. The next prime is 20922761. The reversal of 20922750 is 5722902.

It is a happy number.

20922750 is nontrivially palindromic in base 14.

It is an interprime number because it is at equal distance from previous prime (20922739) and next prime (20922761).

It is a super-2 number, since 2×20922750² = 875522935125000, 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 47 ways as a sum of consecutive naturals, for example, 37977 + ... + 38523.

It is an arithmetic number, because the mean of its divisors is an integer number (625131).

Almost surely, 2^20922750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20922750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30006288).

20922750 is an abundant number, since it is smaller than the sum of its proper divisors (39089826).

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

20922750 is a wasteful number, since it uses less digits than its factorization.

20922750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 20922750 is about 4574.1392632931. The cubic root of 20922750 is about 275.5537053172.

The spelling of 20922750 in words is "twenty million, nine hundred twenty-two thousand, seven hundred fifty".