20622602440 has 64 divisors (see below), whose sum is σ = 52252024320. Its totient is φ = 7257216000.

The previous prime is 20622602393. The next prime is 20622602543. The reversal of 20622602440 is 4420622602.

It is a super-4 number, since 4×20622602440⁴ (a number of 42 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20622602399 and 20622602408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 742321 + ... + 769600.

It is an arithmetic number, because the mean of its divisors is an integer number (816437880).

Almost surely, 2^20622602440 is an apocalyptic number.

20622602440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20622602440 is an abundant number, since it is smaller than the sum of its proper divisors (31629421880).

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

20622602440 is a wasteful number, since it uses less digits than its factorization.

20622602440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511974 (or 1511970 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The spelling of 20622602440 in words is "twenty billion, six hundred twenty-two million, six hundred two thousand, four hundred forty".