22037040 has 120 divisors (see below), whose sum is σ = 74899968. Its totient is φ = 5806080.

The previous prime is 22037039. The next prime is 22037077. The reversal of 22037040 is 4073022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×22037040² = 971262263923200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91320 + ... + 91560.

Almost surely, 2^22037040 is an apocalyptic number.

22037040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22037040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37449984).

22037040 is an abundant number, since it is smaller than the sum of its proper divisors (52862928).

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

22037040 is a wasteful number, since it uses less digits than its factorization.

22037040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 22037040 is about 4694.3625765379. The cubic root of 22037040 is about 280.3610987389.

The spelling of 22037040 in words is "twenty-two million, thirty-seven thousand, forty".