38507240 has 16 divisors (see below), whose sum is σ = 86641380. Its totient is φ = 15402880.

The previous prime is 38507219. The next prime is 38507251. The reversal of 38507240 is 4270583.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38464804 + 42436 = 6202^2 + 206^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481301 + ... + 481380.

Almost surely, 2^38507240 is an apocalyptic number.

It is an amenable number.

38507240 is an abundant number, since it is smaller than the sum of its proper divisors (48134140).

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

38507240 is a wasteful number, since it uses less digits than its factorization.

38507240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962692 (or 962688 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 38507240 is about 6205.4202113958. The cubic root of 38507240 is about 337.6868357371.

The spelling of 38507240 in words is "thirty-eight million, five hundred seven thousand, two hundred forty".