20229624 has 24 divisors (see below), whose sum is σ = 54788760. Its totient is φ = 6743184.

The previous prime is 20229619. The next prime is 20229653. The reversal of 20229624 is 42692202.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140412 + ... + 140555.

It is an arithmetic number, because the mean of its divisors is an integer number (2282865).

Almost surely, 2^20229624 is an apocalyptic number.

20229624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20229624 is an abundant number, since it is smaller than the sum of its proper divisors (34559136).

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

20229624 is a wasteful number, since it uses less digits than its factorization.

20229624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280979 (or 280972 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20229624 is about 4497.7354301915. The cubic root of 20229624 is about 272.4766368882.

The spelling of 20229624 in words is "twenty million, two hundred twenty-nine thousand, six hundred twenty-four".