20941924 has 6 divisors (see below), whose sum is σ = 36648374. Its totient is φ = 10470960.

The previous prime is 20941913. The next prime is 20941927. The reversal of 20941924 is 42914902.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11833600 + 9108324 = 3440^2 + 3018^2 .

It is not an unprimeable number, because it can be changed into a prime (20941927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2617737 + ... + 2617744.

Almost surely, 2^20941924 is an apocalyptic number.

It is an amenable number.

20941924 is a deficient number, since it is larger than the sum of its proper divisors (15706450).

20941924 is a wasteful number, since it uses less digits than its factorization.

20941924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5235485 (or 5235483 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 20941924 is about 4576.2346967786. The cubic root of 20941924 is about 275.6378538096.

The spelling of 20941924 in words is "twenty million, nine hundred forty-one thousand, nine hundred twenty-four".