22028187378 has 16 divisors (see below), whose sum is σ = 44115999840. Its totient is φ = 7332791616.

The previous prime is 22028187373. The next prime is 22028187407. The reversal of 22028187378 is 87378182022.

It is not an unprimeable number, because it can be changed into a prime (22028187373) 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, 2479575 + ... + 2488442.

It is an arithmetic number, because the mean of its divisors is an integer number (2757249990).

Almost surely, 2^22028187378 is an apocalyptic number.

22028187378 is an abundant number, since it is smaller than the sum of its proper divisors (22087812462).

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

22028187378 is a wasteful number, since it uses less digits than its factorization.

22028187378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4968761.

The product of its (nonzero) digits is 602112, while the sum is 48.

The spelling of 22028187378 in words is "twenty-two billion, twenty-eight million, one hundred eighty-seven thousand, three hundred seventy-eight".