22770390 has 32 divisors (see below), whose sum is σ = 55683936. Its totient is φ = 5957120.

The previous prime is 22770389. The next prime is 22770409. The reversal of 22770390 is 9307722.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5571 + ... + 8750.

It is an arithmetic number, because the mean of its divisors is an integer number (1740123).

Almost surely, 2^22770390 is an apocalyptic number.

22770390 is an abundant number, since it is smaller than the sum of its proper divisors (32913546).

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

22770390 is a wasteful number, since it uses less digits than its factorization.

22770390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14384.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 22770390 is about 4771.8329811510. The cubic root of 22770390 is about 283.4371830003.

The spelling of 22770390 in words is "twenty-two million, seven hundred seventy thousand, three hundred ninety".