19975308 has 48 divisors (see below), whose sum is σ = 49728000. Its totient is φ = 6222528.

The previous prime is 19975303. The next prime is 19975309. The reversal of 19975308 is 80357991.

It is a happy number.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 19975308.

It is not an unprimeable number, because it can be changed into a prime (19975303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17458 + ... + 18566.

It is an arithmetic number, because the mean of its divisors is an integer number (1036000).

Almost surely, 2^19975308 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 19975308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24864000).

19975308 is an abundant number, since it is smaller than the sum of its proper divisors (29752692).

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

19975308 is a wasteful number, since it uses less digits than its factorization.

19975308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1212 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 19975308 is about 4469.3744528737. The cubic root of 19975308 is about 271.3300083237.

The spelling of 19975308 in words is "nineteen million, nine hundred seventy-five thousand, three hundred eight".