21968034 has 24 divisors (see below), whose sum is σ = 48294960. Its totient is φ = 6656760.

The previous prime is 21968003. The next prime is 21968053. The reversal of 21968034 is 43086912.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 21967986 and 21968004.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14404 + ... + 15855.

It is an arithmetic number, because the mean of its divisors is an integer number (2012290).

Almost surely, 2^21968034 is an apocalyptic number.

21968034 is an abundant number, since it is smaller than the sum of its proper divisors (26326926).

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

21968034 is a wasteful number, since it uses less digits than its factorization.

21968034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30286 (or 30275 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 21968034 is about 4687.0069340678. The cubic root of 21968034 is about 280.0681551776.

The spelling of 21968034 in words is "twenty-one million, nine hundred sixty-eight thousand, thirty-four".