19702992 has 40 divisors (see below), whose sum is σ = 51605824. Its totient is φ = 6476544.

The previous prime is 19702967. The next prime is 19702993. The reversal of 19702992 is 29920791.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19702992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19702993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693 + ... + 6315.

Almost surely, 2^19702992 is an apocalyptic number.

19702992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19702992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25802912).

19702992 is an abundant number, since it is smaller than the sum of its proper divisors (31902832).

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

19702992 is a wasteful number, since it uses less digits than its factorization.

19702992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5707 (or 5701 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 19702992 is about 4438.8052446576. The cubic root of 19702992 is about 270.0913819625.

The spelling of 19702992 in words is "nineteen million, seven hundred two thousand, nine hundred ninety-two".