21954702 has 32 divisors (see below), whose sum is σ = 54745344. Its totient is φ = 5702400.

The previous prime is 21954679. The next prime is 21954707. The reversal of 21954702 is 20745912.

It is a self number, because there is not a number n which added to its sum of digits gives 21954702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21954707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23299 + ... + 24222.

It is an arithmetic number, because the mean of its divisors is an integer number (1710792).

Almost surely, 2^21954702 is an apocalyptic number.

21954702 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21954702 is an abundant number, since it is smaller than the sum of its proper divisors (32790642).

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

21954702 is a wasteful number, since it uses less digits than its factorization.

21954702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47544.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 21954702 is about 4685.5844886204. The cubic root of 21954702 is about 280.0114876239.

The spelling of 21954702 in words is "twenty-one million, nine hundred fifty-four thousand, seven hundred two".