22378465 has 8 divisors (see below), whose sum is σ = 26907048. Its totient is φ = 17867520.

The previous prime is 22378441. The next prime is 22378481. The reversal of 22378465 is 56487322.

It can be written as a sum of positive squares in 4 ways, for example, as 3508129 + 18870336 = 1873^2 + 4344^2 .

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

It is not a de Polignac number, because 22378465 - 2¹³ = 22370273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1432 + ... + 6841.

It is an arithmetic number, because the mean of its divisors is an integer number (3363381).

Almost surely, 2^22378465 is an apocalyptic number.

It is an amenable number.

22378465 is a deficient number, since it is larger than the sum of its proper divisors (4528583).

22378465 is an equidigital number, since it uses as much as digits as its factorization.

22378465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8819.

The product of its digits is 80640, while the sum is 37.

The square root of 22378465 is about 4730.5882298082. The cubic root of 22378465 is about 281.8015848549.

The spelling of 22378465 in words is "twenty-two million, three hundred seventy-eight thousand, four hundred sixty-five".