22742019 has 16 divisors (see below), whose sum is σ = 33924000. Its totient is φ = 15056928.

The previous prime is 22741997. The next prime is 22742021. The reversal of 22742019 is 91024722.

22742019 is a `hidden beast` number, since 227 + 420 + 19 = 666.

It is not a de Polignac number, because 22742019 - 2⁵ = 22741987 is a prime.

It is a super-2 number, since 2×22742019² = 1034398856392722, 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 = 22741983 and 22742001.

It is not an unprimeable number, because it can be changed into a prime (22742059) 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, 1197 + ... + 6849.

It is an arithmetic number, because the mean of its divisors is an integer number (2120250).

Almost surely, 2^22742019 is an apocalyptic number.

22742019 is a deficient number, since it is larger than the sum of its proper divisors (11181981).

22742019 is a wasteful number, since it uses less digits than its factorization.

22742019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5811 (or 5805 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 22742019 is about 4768.8592975679. The cubic root of 22742019 is about 283.3194169251.

The spelling of 22742019 in words is "twenty-two million, seven hundred forty-two thousand, nineteen".