19995976 has 96 divisors (see below), whose sum is σ = 50944320. Its totient is φ = 7159680.

The previous prime is 19995973. The next prime is 19995979. The reversal of 19995976 is 67959991.

It is an interprime number because it is at equal distance from previous prime (19995973) and next prime (19995979).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19995973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87975 + ... + 88201.

It is an arithmetic number, because the mean of its divisors is an integer number (530670).

Almost surely, 2^19995976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19995976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25472160).

19995976 is an abundant number, since it is smaller than the sum of its proper divisors (30948344).

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

19995976 is a wasteful number, since it uses less digits than its factorization.

19995976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 260 counting only the distinct ones).

The product of its digits is 1377810, while the sum is 55.

The square root of 19995976 is about 4471.6860354904. The cubic root of 19995976 is about 271.4235557443.

The spelling of 19995976 in words is "nineteen million, nine hundred ninety-five thousand, nine hundred seventy-six".