20502716 has 24 divisors (see below), whose sum is σ = 39466560. Its totient is φ = 9260352.

The previous prime is 20502673. The next prime is 20502719. The reversal of 20502716 is 61720502.

It is a super-2 number, since 2×20502716² = 840722726753312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20502691 and 20502700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20502719) by changing a digit.

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, 1751 + ... + 6638.

It is an arithmetic number, because the mean of its divisors is an integer number (1644440).

Almost surely, 2^20502716 is an apocalyptic number.

20502716 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20502716 is a deficient number, since it is larger than the sum of its proper divisors (18963844).

20502716 is a wasteful number, since it uses less digits than its factorization.

20502716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8453 (or 8451 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 20502716 is about 4527.9924911599. The cubic root of 20502716 is about 273.6972698559.

The spelling of 20502716 in words is "twenty million, five hundred two thousand, seven hundred sixteen".