22028461920 has 120 divisors (see below), whose sum is σ = 77742159264. Its totient is φ = 5874253056.

The previous prime is 22028461901. The next prime is 22028461963. The reversal of 22028461920 is 2916482022.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 836904 + ... + 862823.

Almost surely, 2^22028461920 is an apocalyptic number.

22028461920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22028461920 is an abundant number, since it is smaller than the sum of its proper divisors (55713697344).

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

22028461920 is a wasteful number, since it uses less digits than its factorization.

22028461920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699754 (or 1699737 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 22028461920 in words is "twenty-two billion, twenty-eight million, four hundred sixty-one thousand, nine hundred twenty".