21964094 has 8 divisors (see below), whose sum is σ = 33397680. Its totient is φ = 10831536.

The previous prime is 21964093. The next prime is 21964097. The reversal of 21964094 is 49046912.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21964091) 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, 75074 + ... + 75365.

It is an arithmetic number, because the mean of its divisors is an integer number (4174710).

Almost surely, 2^21964094 is an apocalyptic number.

21964094 is a deficient number, since it is larger than the sum of its proper divisors (11433586).

21964094 is a wasteful number, since it uses less digits than its factorization.

21964094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150514.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 21964094 is about 4686.5866043422. The cubic root of 21964094 is about 280.0514106280.

The spelling of 21964094 in words is "twenty-one million, nine hundred sixty-four thousand, ninety-four".