22397078 has 16 divisors (see below), whose sum is σ = 38244096. Its totient is φ = 9737640.

The previous prime is 22397069. The next prime is 22397083. The reversal of 22397078 is 87079322.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21626 + ... + 22637.

It is an arithmetic number, because the mean of its divisors is an integer number (2390256).

Almost surely, 2^22397078 is an apocalyptic number.

22397078 is a deficient number, since it is larger than the sum of its proper divisors (15847018).

22397078 is a wasteful number, since it uses less digits than its factorization.

22397078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44299.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 22397078 is about 4732.5551238205. Note that the first 3 decimals coincide. The cubic root of 22397078 is about 281.8796914836.

It can be divided in two parts, 2 and 2397078, that multiplied together give a triangular number (4794156 = T₃₀₉₆).

The spelling of 22397078 in words is "twenty-two million, three hundred ninety-seven thousand, seventy-eight".