37640043 has 24 divisors (see below), whose sum is σ = 62431200. Its totient is φ = 21406464.

The previous prime is 37640033. The next prime is 37640047. The reversal of 37640043 is 34004673.

It is not a de Polignac number, because 37640043 - 2⁹ = 37639531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 37639989 and 37640016.

It is not an unprimeable number, because it can be changed into a prime (37640047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13123 + ... + 15731.

It is an arithmetic number, because the mean of its divisors is an integer number (2601300).

Almost surely, 2^37640043 is an apocalyptic number.

37640043 is a deficient number, since it is larger than the sum of its proper divisors (24791157).

37640043 is a wasteful number, since it uses less digits than its factorization.

37640043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851 (or 2848 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 37640043 is about 6135.1481644700. The cubic root of 37640043 is about 335.1326214340.

The spelling of 37640043 in words is "thirty-seven million, six hundred forty thousand, forty-three".