39045240 has 224 divisors, whose sum is σ = 143226720. Its totient is φ = 9517824.

The previous prime is 39045221. The next prime is 39045269. The reversal of 39045240 is 4254093.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 379029 + ... + 379131.

It is an arithmetic number, because the mean of its divisors is an integer number (639405).

Almost surely, 2^39045240 is an apocalyptic number.

39045240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39045240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71613360).

39045240 is an abundant number, since it is smaller than the sum of its proper divisors (104181480).

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

39045240 is a wasteful number, since it uses less digits than its factorization.

39045240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 39045240 is about 6248.6190474376. The cubic root of 39045240 is about 339.2522204742.

The spelling of 39045240 in words is "thirty-nine million, forty-five thousand, two hundred forty".