22150840 has 32 divisors (see below), whose sum is σ = 52008480. Its totient is φ = 8474752.

The previous prime is 22150837. The next prime is 22150853. The reversal of 22150840 is 4805122.

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, 11119 + ... + 12958.

It is an arithmetic number, because the mean of its divisors is an integer number (1625265).

Almost surely, 2^22150840 is an apocalyptic number.

22150840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22150840 is an abundant number, since it is smaller than the sum of its proper divisors (29857640).

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

22150840 is a wasteful number, since it uses less digits than its factorization.

22150840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24111 (or 24107 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 22150840 is about 4706.4678900424. The cubic root of 22150840 is about 280.8428683777.

Adding to 22150840 its reverse (4805122), we get a palindrome (26955962).

The spelling of 22150840 in words is "twenty-two million, one hundred fifty thousand, eight hundred forty".