20502746 has 8 divisors (see below), whose sum is σ = 33549984. Its totient is φ = 9319420.

The previous prime is 20502733. The next prime is 20502751. The reversal of 20502746 is 64720502.

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

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, 465950 + ... + 465993.

It is an arithmetic number, because the mean of its divisors is an integer number (4193748).

Almost surely, 2^20502746 is an apocalyptic number.

20502746 is a deficient number, since it is larger than the sum of its proper divisors (13047238).

20502746 is a wasteful number, since it uses less digits than its factorization.

20502746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931956.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 20502746 is about 4527.9958038850. The cubic root of 20502746 is about 273.6974033490.

The spelling of 20502746 in words is "twenty million, five hundred two thousand, seven hundred forty-six".