32898640 has 20 divisors (see below), whose sum is σ = 76489524. Its totient is φ = 13159424.

The previous prime is 32898611. The next prime is 32898641. The reversal of 32898640 is 4689823.

It can be written as a sum of positive squares in 2 ways, for example, as 19149376 + 13749264 = 4376^2 + 3708^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 32898593 and 32898602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32898641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205537 + ... + 205696.

Almost surely, 2^32898640 is an apocalyptic number.

It is an amenable number.

32898640 is an abundant number, since it is smaller than the sum of its proper divisors (43590884).

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

32898640 is a wasteful number, since it uses less digits than its factorization.

32898640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411246 (or 411240 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 32898640 is about 5735.7336060874. The cubic root of 32898640 is about 320.4246965200.

The spelling of 32898640 in words is "thirty-two million, eight hundred ninety-eight thousand, six hundred forty".