22952778 has 8 divisors (see below), whose sum is σ = 45905568. Its totient is φ = 7650924.

The previous prime is 22952773. The next prime is 22952801. The reversal of 22952778 is 87725922.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

22952778 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (22952773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1912726 + ... + 1912737.

It is an arithmetic number, because the mean of its divisors is an integer number (5738196).

Almost surely, 2^22952778 is an apocalyptic number.

22952778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22952778 is a wasteful number, since it uses less digits than its factorization.

22952778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825468.

The product of its digits is 141120, while the sum is 42.

The square root of 22952778 is about 4790.9057598746. The cubic root of 22952778 is about 284.1919369727.

The spelling of 22952778 in words is "twenty-two million, nine hundred fifty-two thousand, seven hundred seventy-eight".