39252540 has 24 divisors (see below), whose sum is σ = 109907280. Its totient is φ = 10467328.

The previous prime is 39252529. The next prime is 39252547. The reversal of 39252540 is 4525293.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 39252498 and 39252507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39252547) 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, 327045 + ... + 327164.

It is an arithmetic number, because the mean of its divisors is an integer number (4579470).

Almost surely, 2^39252540 is an apocalyptic number.

39252540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39252540 is an abundant number, since it is smaller than the sum of its proper divisors (70654740).

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

39252540 is a wasteful number, since it uses less digits than its factorization.

39252540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654221 (or 654219 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 39252540 is about 6265.1847538600. The cubic root of 39252540 is about 339.8515499571.

The spelling of 39252540 in words is "thirty-nine million, two hundred fifty-two thousand, five hundred forty".