21374058 has 8 divisors (see below), whose sum is σ = 42748128. Its totient is φ = 7124684.

The previous prime is 21374051. The next prime is 21374071. The reversal of 21374058 is 85047312.

It is a sphenic number, since it is the product of 3 distinct primes.

21374058 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (21374051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1781166 + ... + 1781177.

It is an arithmetic number, because the mean of its divisors is an integer number (5343516).

Almost surely, 2^21374058 is an apocalyptic number.

21374058 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21374058 is a wasteful number, since it uses less digits than its factorization.

21374058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562348.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 21374058 is about 4623.2086260518. The cubic root of 21374058 is about 277.5208782279.

The spelling of 21374058 in words is "twenty-one million, three hundred seventy-four thousand, fifty-eight".