20246464 has 56 divisors (see below), whose sum is σ = 47028608. Its totient is φ = 8467200.

The previous prime is 20246453. The next prime is 20246483. The reversal of 20246464 is 46464202.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (28).

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 7 ways as a sum of consecutive naturals, for example, 18739 + ... + 19789.

Almost surely, 2^20246464 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 20246464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23514304).

20246464 is an abundant number, since it is smaller than the sum of its proper divisors (26782144).

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

20246464 is a wasteful number, since it uses less digits than its factorization.

20246464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 20246464 is about 4499.6070939583. The cubic root of 20246464 is about 272.5522229682.

The spelling of 20246464 in words is "twenty million, two hundred forty-six thousand, four hundred sixty-four".