20694464 has 42 divisors (see below), whose sum is σ = 47777400. Its totient is φ = 8867712.

The previous prime is 20694449. The next prime is 20694467. The reversal of 20694464 is 46449602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20694467) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164 + ... + 6435.

Almost surely, 2^20694464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20694464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23888700).

20694464 is an abundant number, since it is smaller than the sum of its proper divisors (27082936).

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

20694464 is an equidigital number, since it uses as much as digits as its factorization.

20694464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6625 (or 6608 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 20694464 is about 4549.1168373652. The cubic root of 20694464 is about 274.5478586720.

The spelling of 20694464 in words is "twenty million, six hundred ninety-four thousand, four hundred sixty-four".