22780350 has 144 divisors (see below), whose sum is σ = 66852864. Its totient is φ = 5544000.

The previous prime is 22780343. The next prime is 22780393. The reversal of 22780350 is 5308722.

It is a super-2 number, since 2×22780350² = 1037888692245000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 320815 + ... + 320885.

It is an arithmetic number, because the mean of its divisors is an integer number (464256).

Almost surely, 2^22780350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22780350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33426432).

22780350 is an abundant number, since it is smaller than the sum of its proper divisors (44072514).

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

22780350 is a wasteful number, since it uses less digits than its factorization.

22780350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 22780350 is about 4772.8764911738. The cubic root of 22780350 is about 283.4785030778.

The spelling of 22780350 in words is "twenty-two million, seven hundred eighty thousand, three hundred fifty".