20033919 has 16 divisors (see below), whose sum is σ = 29858400. Its totient is φ = 13275648.

The previous prime is 20033917. The next prime is 20033933. The reversal of 20033919 is 91933002.

It is not a de Polignac number, because 20033919 - 2¹ = 20033917 is a prime.

It is a super-2 number, since 2×20033919² = 802715820997122, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 20033892 and 20033901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033911) 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, 2527 + ... + 6815.

It is an arithmetic number, because the mean of its divisors is an integer number (1866150).

Almost surely, 2^20033919 is an apocalyptic number.

20033919 is a deficient number, since it is larger than the sum of its proper divisors (9824481).

20033919 is a wasteful number, since it uses less digits than its factorization.

20033919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4471 (or 4465 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 20033919 is about 4475.9266079774. The cubic root of 20033919 is about 271.5951255449.

The spelling of 20033919 in words is "twenty million, thirty-three thousand, nine hundred nineteen".