38299240 has 64 divisors (see below), whose sum is σ = 100805760. Its totient is φ = 12821760.

The previous prime is 38299237. The next prime is 38299241. The reversal of 38299240 is 4299283.

It is a self number, because there is not a number n which added to its sum of digits gives 38299240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38299241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10450 + ... + 13630.

It is an arithmetic number, because the mean of its divisors is an integer number (1575090).

Almost surely, 2^38299240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38299240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50402880).

38299240 is an abundant number, since it is smaller than the sum of its proper divisors (62506520).

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

38299240 is a wasteful number, since it uses less digits than its factorization.

38299240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242 (or 3238 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 38299240 is about 6188.6379761624. The cubic root of 38299240 is about 337.0777233581.

The spelling of 38299240 in words is "thirty-eight million, two hundred ninety-nine thousand, two hundred forty".