20726516 has 12 divisors (see below), whose sum is σ = 37115232. Its totient is φ = 10122168.

The previous prime is 20726509. The next prime is 20726521. The reversal of 20726516 is 61562702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60080 + ... + 60423.

It is an arithmetic number, because the mean of its divisors is an integer number (3092936).

Almost surely, 2^20726516 is an apocalyptic number.

It is an amenable number.

20726516 is a deficient number, since it is larger than the sum of its proper divisors (16388716).

20726516 is a wasteful number, since it uses less digits than its factorization.

20726516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120550 (or 120548 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 20726516 is about 4552.6383559426. The cubic root of 20726516 is about 274.6895272968.

The spelling of 20726516 in words is "twenty million, seven hundred twenty-six thousand, five hundred sixteen".