37212216 has 16 divisors (see below), whose sum is σ = 93030600. Its totient is φ = 12404064.

The previous prime is 37212193. The next prime is 37212223. The reversal of 37212216 is 61221273.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 1550509 = 37212216 / (3 + 7 + 2 + 1 + 2 + 2 + 1 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775231 + ... + 775278.

Almost surely, 2^37212216 is an apocalyptic number.

It is an amenable number.

37212216 is an abundant number, since it is smaller than the sum of its proper divisors (55818384).

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

37212216 is a wasteful number, since it uses less digits than its factorization.

37212216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550518 (or 1550514 counting only the distinct ones).

The product of its digits is 1008, while the sum is 24.

The square root of 37212216 is about 6100.1816366400. The cubic root of 37212216 is about 333.8580438255.

Adding to 37212216 its reverse (61221273), we get a palindrome (98433489).

The spelling of 37212216 in words is "thirty-seven million, two hundred twelve thousand, two hundred sixteen".