37281940 has 48 divisors (see below), whose sum is σ = 81510912. Its totient is φ = 14311296.

The previous prime is 37281911. The next prime is 37281953. The reversal of 37281940 is 4918273.

37281940 is nontrivially palindromic in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 37281896 and 37281905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61117 + ... + 61723.

It is an arithmetic number, because the mean of its divisors is an integer number (1698144).

Almost surely, 2^37281940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 37281940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40755456).

37281940 is an abundant number, since it is smaller than the sum of its proper divisors (44228972).

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

37281940 is a wasteful number, since it uses less digits than its factorization.

37281940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 37281940 is about 6105.8938739549. The cubic root of 37281940 is about 334.0664287536.

The spelling of 37281940 in words is "thirty-seven million, two hundred eighty-one thousand, nine hundred forty".