37799640 has 48 divisors (see below), whose sum is σ = 122850000. Its totient is φ = 10079808.

The previous prime is 37799627. The next prime is 37799647. The reversal of 37799640 is 4699773.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37799647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52140 + ... + 52859.

It is an arithmetic number, because the mean of its divisors is an integer number (2559375).

Almost surely, 2^37799640 is an apocalyptic number.

37799640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

37799640 is an abundant number, since it is smaller than the sum of its proper divisors (85050360).

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

37799640 is a wasteful number, since it uses less digits than its factorization.

37799640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105016 (or 105009 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 37799640 is about 6148.1411825039. The cubic root of 37799640 is about 335.6056172030.

The spelling of 37799640 in words is "thirty-seven million, seven hundred ninety-nine thousand, six hundred forty".