32400987 has 4 divisors (see below), whose sum is σ = 43201320. Its totient is φ = 21600656.

The previous prime is 32400961. The next prime is 32401003. The reversal of 32400987 is 78900423.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 32400987 - 2¹⁴ = 32384603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32400587) 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, 5400162 + ... + 5400167.

It is an arithmetic number, because the mean of its divisors is an integer number (10800330).

Almost surely, 2^32400987 is an apocalyptic number.

32400987 is a deficient number, since it is larger than the sum of its proper divisors (10800333).

32400987 is a wasteful number, since it uses less digits than its factorization.

32400987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10800332.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 32400987 is about 5692.1864867553. The cubic root of 32400987 is about 318.8008078948.

The spelling of 32400987 in words is "thirty-two million, four hundred thousand, nine hundred eighty-seven".