22378057 has 8 divisors (see below), whose sum is σ = 25147584. Its totient is φ = 19758288.

The previous prime is 22378009. The next prime is 22378073. The reversal of 22378057 is 75087322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22378057 - 2¹⁵ = 22345289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22378357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37123 + ... + 37720.

It is an arithmetic number, because the mean of its divisors is an integer number (3143448).

Almost surely, 2^22378057 is an apocalyptic number.

It is an amenable number.

22378057 is a deficient number, since it is larger than the sum of its proper divisors (2769527).

22378057 is a wasteful number, since it uses less digits than its factorization.

22378057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74879.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 22378057 is about 4730.5451060105. The cubic root of 22378057 is about 281.7998722598.

The spelling of 22378057 in words is "twenty-two million, three hundred seventy-eight thousand, fifty-seven".