22237020 has 216 divisors, whose sum is σ = 79135056. Its totient is φ = 5031936.

The previous prime is 22236971. The next prime is 22237027. The reversal of 22237020 is 2073222.

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

It is a junction number, because it is equal to n+sod(n) for n = 22236984 and 22237002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22237027) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 517119 + ... + 517161.

It is an arithmetic number, because the mean of its divisors is an integer number (366366).

Almost surely, 2^22237020 is an apocalyptic number.

22237020 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 22237020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39567528).

22237020 is an abundant number, since it is smaller than the sum of its proper divisors (56898036).

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

22237020 is a wasteful number, since it uses less digits than its factorization.

22237020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 83 counting only the distinct ones).

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

The square root of 22237020 is about 4715.6144880599. The cubic root of 22237020 is about 281.2066125664.

The spelling of 22237020 in words is "twenty-two million, two hundred thirty-seven thousand, twenty".