21412958 has 16 divisors (see below), whose sum is σ = 36771840. Its totient is φ = 9161016.

The previous prime is 21412949. The next prime is 21412967. The reversal of 21412958 is 85921412.

It is an interprime number because it is at equal distance from previous prime (21412949) and next prime (21412967).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10835 + ... + 12657.

It is an arithmetic number, because the mean of its divisors is an integer number (2298240).

Almost surely, 2^21412958 is an apocalyptic number.

21412958 is a deficient number, since it is larger than the sum of its proper divisors (15358882).

21412958 is a wasteful number, since it uses less digits than its factorization.

21412958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671.

The product of its digits is 5760, while the sum is 32.

The square root of 21412958 is about 4627.4137485209. The cubic root of 21412958 is about 277.6891354613.

The spelling of 21412958 in words is "twenty-one million, four hundred twelve thousand, nine hundred fifty-eight".