20372919 has 32 divisors (see below), whose sum is σ = 33177600. Its totient is φ = 10854912.

The previous prime is 20372879. The next prime is 20372923. The reversal of 20372919 is 91927302.

It is not a de Polignac number, because 20372919 - 2¹⁷ = 20241847 is a prime.

It is a super-2 number, since 2×20372919² = 830111657161122, which contains 22 as substring.

It is a plaindrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 20372919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20372969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53002 + ... + 53384.

It is an arithmetic number, because the mean of its divisors is an integer number (1036800).

Almost surely, 2^20372919 is an apocalyptic number.

20372919 is a deficient number, since it is larger than the sum of its proper divisors (12804681).

20372919 is a wasteful number, since it uses less digits than its factorization.

20372919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 20372919 is about 4513.6370035704. The cubic root of 20372919 is about 273.1184796151.

The spelling of 20372919 in words is "twenty million, three hundred seventy-two thousand, nine hundred nineteen".