20392516 has 6 divisors (see below), whose sum is σ = 35686910. Its totient is φ = 10196256.

The previous prime is 20392499. The next prime is 20392523. The reversal of 20392516 is 61529302.

It can be written as a sum of positive squares in only one way, i.e., 17977600 + 2414916 = 4240^2 + 1554^2 .

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, 2549061 + ... + 2549068.

Almost surely, 2^20392516 is an apocalyptic number.

It is an amenable number.

20392516 is a deficient number, since it is larger than the sum of its proper divisors (15294394).

20392516 is a wasteful number, since it uses less digits than its factorization.

20392516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5098133 (or 5098131 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 20392516 is about 4515.8073475293. The cubic root of 20392516 is about 273.2060237320.

The spelling of 20392516 in words is "twenty million, three hundred ninety-two thousand, five hundred sixteen".