20694370 has 16 divisors (see below), whose sum is σ = 37775808. Its totient is φ = 8160880.

The previous prime is 20694353. The next prime is 20694379. The reversal of 20694370 is 7349602.

It is not an unprimeable number, because it can be changed into a prime (20694379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13864 + ... + 15283.

It is an arithmetic number, because the mean of its divisors is an integer number (2360988).

Almost surely, 2^20694370 is an apocalyptic number.

20694370 is a deficient number, since it is larger than the sum of its proper divisors (17081438).

20694370 is a wasteful number, since it uses less digits than its factorization.

20694370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29225.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 20694370 is about 4549.1065056778. The cubic root of 20694370 is about 274.5474429805.

The spelling of 20694370 in words is "twenty million, six hundred ninety-four thousand, three hundred seventy".