22059978 has 16 divisors (see below), whose sum is σ = 44953056. Its totient is φ = 7214480.

The previous prime is 22059977. The next prime is 22059997. The reversal of 22059978 is 87995022.

It is not an unprimeable number, because it can be changed into a prime (22059971) 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, 34368 + ... + 35003.

It is an arithmetic number, because the mean of its divisors is an integer number (2809566).

Almost surely, 2^22059978 is an apocalyptic number.

22059978 is an abundant number, since it is smaller than the sum of its proper divisors (22893078).

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

22059978 is a wasteful number, since it uses less digits than its factorization.

22059978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69429.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 22059978 is about 4696.8050843100. The cubic root of 22059978 is about 280.4583394586.

The spelling of 22059978 in words is "twenty-two million, fifty-nine thousand, nine hundred seventy-eight".