22819401 has 24 divisors (see below), whose sum is σ = 37293984. Its totient is φ = 13828320.

The previous prime is 22819397. The next prime is 22819403. The reversal of 22819401 is 10491822.

It is not a de Polignac number, because 22819401 - 2² = 22819397 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (22819403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1596 + ... + 6941.

It is an arithmetic number, because the mean of its divisors is an integer number (1553916).

Almost surely, 2^22819401 is an apocalyptic number.

It is an amenable number.

22819401 is a deficient number, since it is larger than the sum of its proper divisors (14474583).

22819401 is an equidigital number, since it uses as much as digits as its factorization.

22819401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8563 (or 8551 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 22819401 is about 4776.9656687064. The cubic root of 22819401 is about 283.6403940558.

It can be divided in two parts, 22819 and 401, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 22819401 in words is "twenty-two million, eight hundred nineteen thousand, four hundred one".