22202840 has 32 divisors (see below), whose sum is σ = 54498960. Its totient is φ = 8073600.

The previous prime is 22202839. The next prime is 22202857. The reversal of 22202840 is 4820222.

It is a super-2 number, since 2×22202840² = 985932208131200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24791 + ... + 25670.

Almost surely, 2^22202840 is an apocalyptic number.

22202840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22202840 is an abundant number, since it is smaller than the sum of its proper divisors (32296120).

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

22202840 is a wasteful number, since it uses less digits than its factorization.

22202840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50483 (or 50479 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 22202840 is about 4711.9889643334. The cubic root of 22202840 is about 281.0624599950.

The spelling of 22202840 in words is "twenty-two million, two hundred two thousand, eight hundred forty".