32130240 has 56 divisors (see below), whose sum is σ = 102016560. Its totient is φ = 8567808.

The previous prime is 32130227. The next prime is 32130247. The reversal of 32130240 is 4203123.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (32130247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15775 + ... + 17694.

Almost surely, 2^32130240 is an apocalyptic number.

32130240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32130240 is an abundant number, since it is smaller than the sum of its proper divisors (69886320).

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

32130240 is a wasteful number, since it uses less digits than its factorization.

32130240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33489 (or 33479 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 32130240 is about 5668.3542585128. The cubic root of 32130240 is about 317.9103421936.

Adding to 32130240 its reverse (4203123), we get a palindrome (36333363).

The spelling of 32130240 in words is "thirty-two million, one hundred thirty thousand, two hundred forty".