21360794 has 32 divisors (see below), whose sum is σ = 39680256. Its totient is φ = 8398080.

The previous prime is 21360761. The next prime is 21360799. The reversal of 21360794 is 49706312.

It is a self number, because there is not a number n which added to its sum of digits gives 21360794.

It is not an unprimeable number, because it can be changed into a prime (21360799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43619 + ... + 44105.

It is an arithmetic number, because the mean of its divisors is an integer number (1240008).

Almost surely, 2^21360794 is an apocalyptic number.

21360794 is a deficient number, since it is larger than the sum of its proper divisors (18319462).

21360794 is a wasteful number, since it uses less digits than its factorization.

21360794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 21360794 is about 4621.7739018693. The cubic root of 21360794 is about 277.4634597343.

The spelling of 21360794 in words is "twenty-one million, three hundred sixty thousand, seven hundred ninety-four".