22770450 has 96 divisors (see below), whose sum is σ = 63745920. Its totient is φ = 5976000.

The previous prime is 22770421. The next prime is 22770467. The reversal of 22770450 is 5407722.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136267 + ... + 136433.

It is an arithmetic number, because the mean of its divisors is an integer number (664020).

Almost surely, 2^22770450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22770450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31872960).

22770450 is an abundant number, since it is smaller than the sum of its proper divisors (40975470).

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

22770450 is a wasteful number, since it uses less digits than its factorization.

22770450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 22770450 is about 4771.8392680391. The cubic root of 22770450 is about 283.4374319525.

It can be divided in two parts, 22770 and 450, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 22770450 in words is "twenty-two million, seven hundred seventy thousand, four hundred fifty".