39264240 has 40 divisors (see below), whose sum is σ = 121719888. Its totient is φ = 10470400.

The previous prime is 39264233. The next prime is 39264257. The reversal of 39264240 is 4246293.

It is a tau number, because it is divible by the number of its divisors (40).

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 = 39264198 and 39264207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81561 + ... + 82040.

Almost surely, 2^39264240 is an apocalyptic number.

39264240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39264240 is an abundant number, since it is smaller than the sum of its proper divisors (82455648).

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

39264240 is a wasteful number, since it uses less digits than its factorization.

39264240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163617 (or 163611 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 39264240 is about 6266.1184157339. The cubic root of 39264240 is about 339.8853131066.

The spelling of 39264240 in words is "thirty-nine million, two hundred sixty-four thousand, two hundred forty".