20732494 has 8 divisors (see below), whose sum is σ = 31199040. Its totient is φ = 10332816.

The previous prime is 20732483. The next prime is 20732501. The reversal of 20732494 is 49423702.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 15934 + ... + 17185.

It is an arithmetic number, because the mean of its divisors is an integer number (3899880).

Almost surely, 2^20732494 is an apocalyptic number.

20732494 is a deficient number, since it is larger than the sum of its proper divisors (10466546).

20732494 is a wasteful number, since it uses less digits than its factorization.

20732494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33434.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 20732494 is about 4553.2948509843. The cubic root of 20732494 is about 274.7159336667.

The spelling of 20732494 in words is "twenty million, seven hundred thirty-two thousand, four hundred ninety-four".