37728073 has 8 divisors (see below), whose sum is σ = 40015296. Its totient is φ = 35494800.

The previous prime is 37728037. The next prime is 37728107. The reversal of 37728073 is 37082773.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 37728073 - 2²¹ = 35630921 is a prime.

It is a super-3 number, since 3×37728073³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37728773) 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, 12043 + ... + 14848.

It is an arithmetic number, because the mean of its divisors is an integer number (5001912).

Almost surely, 2^37728073 is an apocalyptic number.

It is an amenable number.

37728073 is a deficient number, since it is larger than the sum of its proper divisors (2287223).

37728073 is a wasteful number, since it uses less digits than its factorization.

37728073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26975.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 37728073 is about 6142.3182105782. The cubic root of 37728073 is about 335.3936798996.

The spelling of 37728073 in words is "thirty-seven million, seven hundred twenty-eight thousand, seventy-three".