22770378 has 24 divisors (see below), whose sum is σ = 52238628. Its totient is φ = 7143552.

The previous prime is 22770353. The next prime is 22770389. The reversal of 22770378 is 87307722.

It can be written as a sum of positive squares in 2 ways, for example, as 22212369 + 558009 = 4713^2 + 747^2 .

It is a super-2 number, since 2×22770378² = 1036980228525768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36901 + ... + 37512.

Almost surely, 2^22770378 is an apocalyptic number.

22770378 is an abundant number, since it is smaller than the sum of its proper divisors (29468250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22770378 is a wasteful number, since it uses less digits than its factorization.

22770378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74438 (or 74435 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 22770378 is about 4771.8317237723. The cubic root of 22770378 is about 283.4371332098.

The spelling of 22770378 in words is "twenty-two million, seven hundred seventy thousand, three hundred seventy-eight".