38040340 has 24 divisors (see below), whose sum is σ = 86030280. Its totient is φ = 14045568.

The previous prime is 38040313. The next prime is 38040341. The reversal of 38040340 is 4304083.

It can be written as a sum of positive squares in 4 ways, for example, as 2566404 + 35473936 = 1602^2 + 5956^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38040341) 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, 72895 + ... + 73414.

It is an arithmetic number, because the mean of its divisors is an integer number (3584595).

Almost surely, 2^38040340 is an apocalyptic number.

It is an amenable number.

38040340 is an abundant number, since it is smaller than the sum of its proper divisors (47989940).

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

38040340 is a wasteful number, since it uses less digits than its factorization.

38040340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146331 (or 146329 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 38040340 is about 6167.6851411206. The cubic root of 38040340 is about 336.3164653510.

The spelling of 38040340 in words is "thirty-eight million, forty thousand, three hundred forty".