19697796 has 24 divisors (see below), whose sum is σ = 51068640. Its totient is φ = 6565896.

The previous prime is 19697789. The next prime is 19697831. The reversal of 19697796 is 69779691.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91086 + ... + 91301.

It is an arithmetic number, because the mean of its divisors is an integer number (2127860).

Almost surely, 2^19697796 is an apocalyptic number.

It is an amenable number.

19697796 is an abundant number, since it is smaller than the sum of its proper divisors (31370844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19697796 is a wasteful number, since it uses less digits than its factorization.

19697796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182400 (or 182392 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 54.

The square root of 19697796 is about 4438.2199134338. The cubic root of 19697796 is about 270.0676373758.

The spelling of 19697796 in words is "nineteen million, six hundred ninety-seven thousand, seven hundred ninety-six".