20720622 has 32 divisors (see below), whose sum is σ = 44876160. Its totient is φ = 6340320.

The previous prime is 20720611. The next prime is 20720633. The reversal of 20720622 is 22602702.

It is an interprime number because it is at equal distance from previous prime (20720611) and next prime (20720633).

It is a congruent number.

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, 15829 + ... + 17087.

It is an arithmetic number, because the mean of its divisors is an integer number (1402380).

Almost surely, 2^20720622 is an apocalyptic number.

20720622 is an abundant number, since it is smaller than the sum of its proper divisors (24155538).

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

20720622 is a wasteful number, since it uses less digits than its factorization.

20720622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20720622 is about 4551.9909929612. The cubic root of 20720622 is about 274.6634870051.

The spelling of 20720622 in words is "twenty million, seven hundred twenty thousand, six hundred twenty-two".