20019366 has 32 divisors (see below), whose sum is σ = 45926400. Its totient is φ = 6457320.

The previous prime is 20019347. The next prime is 20019403. The reversal of 20019366 is 66391002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4306 + ... + 7653.

It is an arithmetic number, because the mean of its divisors is an integer number (1435200).

Almost surely, 2^20019366 is an apocalyptic number.

20019366 is an abundant number, since it is smaller than the sum of its proper divisors (25907034).

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

20019366 is a wasteful number, since it uses less digits than its factorization.

20019366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12001 (or 11995 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 20019366 is about 4474.3006157387. The cubic root of 20019366 is about 271.5293457490.

The spelling of 20019366 in words is "twenty million, nineteen thousand, three hundred sixty-six".