37522728 has 48 divisors (see below), whose sum is σ = 103552020. Its totient is φ = 12270336.

The previous prime is 37522691. The next prime is 37522733. The reversal of 37522728 is 82722573.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 36942084 + 580644 = 6078^2 + 762^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 37522692 and 37522701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1101 + ... + 8732.

Almost surely, 2^37522728 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 37522728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51776010).

37522728 is an abundant number, since it is smaller than the sum of its proper divisors (66029292).

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

37522728 is a wasteful number, since it uses less digits than its factorization.

37522728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9898 (or 9891 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 37522728 is about 6125.5798092915. The cubic root of 37522728 is about 334.7840830380.

The spelling of 37522728 in words is "thirty-seven million, five hundred twenty-two thousand, seven hundred twenty-eight".