20464894 has 24 divisors (see below), whose sum is σ = 33237360. Its totient is φ = 9450056.

The previous prime is 20464883. The next prime is 20464903. The reversal of 20464894 is 49846402.

20464894 is nontrivially palindromic in base 14.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 705672 + ... + 705700.

It is an arithmetic number, because the mean of its divisors is an integer number (1384890).

Almost surely, 2^20464894 is an apocalyptic number.

20464894 is a deficient number, since it is larger than the sum of its proper divisors (12772466).

20464894 is an frugal number, since it uses more digits than its factorization.

20464894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 20464894 is about 4523.8140987446. The cubic root of 20464894 is about 273.5288669626.

The spelling of 20464894 in words is "twenty million, four hundred sixty-four thousand, eight hundred ninety-four".