21462000630 has 128 divisors (see below), whose sum is σ = 60471290880. Its totient is φ = 4772597760.

The previous prime is 21462000607. The next prime is 21462000661. The reversal of 21462000630 is 3600026412.

It is a self number, because there is not a number n which added to its sum of digits gives 21462000630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3259902 + ... + 3266478.

It is an arithmetic number, because the mean of its divisors is an integer number (472431960).

Almost surely, 2^21462000630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21462000630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30235645440).

21462000630 is an abundant number, since it is smaller than the sum of its proper divisors (39009290250).

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

21462000630 is a wasteful number, since it uses less digits than its factorization.

21462000630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7014.

The product of its (nonzero) digits is 1728, while the sum is 24.

The spelling of 21462000630 in words is "twenty-one billion, four hundred sixty-two million, six hundred thirty", and thus it is an aban number.