20613464 has 8 divisors (see below), whose sum is σ = 38650260. Its totient is φ = 10306728.

The previous prime is 20613457. The next prime is 20613473. The reversal of 20613464 is 46431602.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1288334 + ... + 1288349.

Almost surely, 2^20613464 is an apocalyptic number.

It is an amenable number.

20613464 is a deficient number, since it is larger than the sum of its proper divisors (18036796).

20613464 is a wasteful number, since it uses less digits than its factorization.

20613464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576689 (or 2576685 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 20613464 is about 4540.2052817026. The cubic root of 20613464 is about 274.1891886086.

The spelling of 20613464 in words is "twenty million, six hundred thirteen thousand, four hundred sixty-four".