22782078 has 24 divisors (see below), whose sum is σ = 53849016. Its totient is φ = 6903600.

The previous prime is 22782073. The next prime is 22782173. The reversal of 22782078 is 87028722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22782073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57333 + ... + 57728.

It is an arithmetic number, because the mean of its divisors is an integer number (2243709).

Almost surely, 2^22782078 is an apocalyptic number.

22782078 is an abundant number, since it is smaller than the sum of its proper divisors (31066938).

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

22782078 is a wasteful number, since it uses less digits than its factorization.

22782078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115080 (or 115077 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 22782078 is about 4773.0575106529. The cubic root of 22782078 is about 283.4856706362.

It can be divided in two parts, 2278 and 2078, that added together give a square (4356 = 66²).

The spelling of 22782078 in words is "twenty-two million, seven hundred eighty-two thousand, seventy-eight".