37222220 has 24 divisors (see below), whose sum is σ = 89333664. Its totient is φ = 12761856.

The previous prime is 37222217. The next prime is 37222223. The reversal of 37222220 is 2222273.

It is an interprime number because it is at equal distance from previous prime (37222217) and next prime (37222223).

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

It is a junction number, because it is equal to n+sod(n) for n = 37222192 and 37222201.

It is not an unprimeable number, because it can be changed into a prime (37222223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132797 + ... + 133076.

It is an arithmetic number, because the mean of its divisors is an integer number (3722236).

Almost surely, 2^37222220 is an apocalyptic number.

It is an amenable number.

37222220 is an abundant number, since it is smaller than the sum of its proper divisors (52111444).

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

37222220 is a wasteful number, since it uses less digits than its factorization.

37222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265889 (or 265887 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 37222220 is about 6101.0015571216. The cubic root of 37222220 is about 333.8879588819.

Adding to 37222220 its reverse (2222273), we get a palindrome (39444493).

The spelling of 37222220 in words is "thirty-seven million, two hundred twenty-two thousand, two hundred twenty".