21374046 has 24 divisors (see below), whose sum is σ = 46560384. Its totient is φ = 7086240.

The previous prime is 21374029. The next prime is 21374051. The reversal of 21374046 is 64047312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330 + ... + 6546.

It is an arithmetic number, because the mean of its divisors is an integer number (1940016).

Almost surely, 2^21374046 is an apocalyptic number.

21374046 is an abundant number, since it is smaller than the sum of its proper divisors (25186338).

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

21374046 is a wasteful number, since it uses less digits than its factorization.

21374046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6416 (or 6413 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 21374046 is about 4623.2073282517. The cubic root of 21374046 is about 277.5208262918.

The spelling of 21374046 in words is "twenty-one million, three hundred seventy-four thousand, forty-six".