32812840 has 16 divisors (see below), whose sum is σ = 73828980. Its totient is φ = 13125120.

The previous prime is 32812837. The next prime is 32812841. The reversal of 32812840 is 4821823.

It can be written as a sum of positive squares in 2 ways, for example, as 30272004 + 2540836 = 5502^2 + 1594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 32812799 and 32812808.

It is not an unprimeable number, because it can be changed into a prime (32812841) 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, 410121 + ... + 410200.

Almost surely, 2^32812840 is an apocalyptic number.

It is an amenable number.

32812840 is an abundant number, since it is smaller than the sum of its proper divisors (41016140).

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

32812840 is a wasteful number, since it uses less digits than its factorization.

32812840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820332 (or 820328 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 32812840 is about 5728.2492962510. The cubic root of 32812840 is about 320.1458970130.

The spelling of 32812840 in words is "thirty-two million, eight hundred twelve thousand, eight hundred forty".