38687340 has 24 divisors (see below), whose sum is σ = 108324720. Its totient is φ = 10316608.

The previous prime is 38687339. The next prime is 38687347. The reversal of 38687340 is 4378683.

It is not an unprimeable number, because it can be changed into a prime (38687347) 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, 322335 + ... + 322454.

It is an arithmetic number, because the mean of its divisors is an integer number (4513530).

Almost surely, 2^38687340 is an apocalyptic number.

38687340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38687340 is an abundant number, since it is smaller than the sum of its proper divisors (69637380).

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

38687340 is a wasteful number, since it uses less digits than its factorization.

38687340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644801 (or 644799 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 38687340 is about 6219.9147904131. The cubic root of 38687340 is about 338.2124756733.

It can be divided in two parts, 38 and 687340, that added together give a triangular number (687378 = T₁₁₇₂).

The spelling of 38687340 in words is "thirty-eight million, six hundred eighty-seven thousand, three hundred forty".