22978377 has 8 divisors (see below), whose sum is σ = 34042080. Its totient is φ = 15318900.

The previous prime is 22978349. The next prime is 22978381. The reversal of 22978377 is 77387922.

It is not a de Polignac number, because 22978377 - 2⁶ = 22978313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22978337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425499 + ... + 425552.

It is an arithmetic number, because the mean of its divisors is an integer number (4255260).

Almost surely, 2^22978377 is an apocalyptic number.

22978377 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

22978377 is a deficient number, since it is larger than the sum of its proper divisors (11063703).

22978377 is an equidigital number, since it uses as much as digits as its factorization.

22978377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851060 (or 851054 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 22978377 is about 4793.5766396293. The cubic root of 22978377 is about 284.2975498457.

It can be divided in two parts, 229 and 78377, that added together give a triangular number (78606 = T₃₉₆).

The spelling of 22978377 in words is "twenty-two million, nine hundred seventy-eight thousand, three hundred seventy-seven".