21244028410 has 128 divisors (see below), whose sum is σ = 45528791040. Its totient is φ = 7048396800.

The previous prime is 21244028381. The next prime is 21244028413. The reversal of 21244028410 is 1482044212.

It is not an unprimeable number, because it can be changed into a prime (21244028413) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33141690 + ... + 33142330.

It is an arithmetic number, because the mean of its divisors is an integer number (355693680).

Almost surely, 2^21244028410 is an apocalyptic number.

21244028410 is an abundant number, since it is smaller than the sum of its proper divisors (24284762630).

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

21244028410 is a wasteful number, since it uses less digits than its factorization.

21244028410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192.

The product of its (nonzero) digits is 4096, while the sum is 28.

The spelling of 21244028410 in words is "twenty-one billion, two hundred forty-four million, twenty-eight thousand, four hundred ten".