21889348 has 48 divisors (see below), whose sum is σ = 43853824. Its totient is φ = 9486720.

The previous prime is 21889333. The next prime is 21889363. The reversal of 21889348 is 84398812.

It is an interprime number because it is at equal distance from previous prime (21889333) and next prime (21889363).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59461 + ... + 59827.

Almost surely, 2^21889348 is an apocalyptic number.

It is an amenable number.

21889348 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

21889348 is a wasteful number, since it uses less digits than its factorization.

21889348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 450 counting only the distinct ones).

The product of its digits is 110592, while the sum is 43.

The square root of 21889348 is about 4678.6053477505. The cubic root of 21889348 is about 279.7333686285.

The spelling of 21889348 in words is "twenty-one million, eight hundred eighty-nine thousand, three hundred forty-eight".