32115240 has 48 divisors (see below), whose sum is σ = 104375700. Its totient is φ = 8563968.

The previous prime is 32115233. The next prime is 32115247. The reversal of 32115240 is 4251123.

It is an interprime number because it is at equal distance from previous prime (32115233) and next prime (32115247).

It can be written as a sum of positive squares in 2 ways, for example, as 30935844 + 1179396 = 5562^2 + 1086^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (32115247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44245 + ... + 44964.

Almost surely, 2^32115240 is an apocalyptic number.

32115240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32115240 is an abundant number, since it is smaller than the sum of its proper divisors (72260460).

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

32115240 is a wasteful number, since it uses less digits than its factorization.

32115240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89226 (or 89219 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 32115240 is about 5667.0309686819. The cubic root of 32115240 is about 317.8608623536.

Adding to 32115240 its reverse (4251123), we get a palindrome (36366363).

The spelling of 32115240 in words is "thirty-two million, one hundred fifteen thousand, two hundred forty".