32816990 has 16 divisors (see below), whose sum is σ = 62179920. Its totient is φ = 12435840.

The previous prime is 32816947. The next prime is 32816999. The reversal of 32816990 is 9961823.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32816999) 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, 86171 + ... + 86550.

It is an arithmetic number, because the mean of its divisors is an integer number (3886245).

Almost surely, 2^32816990 is an apocalyptic number.

32816990 is a deficient number, since it is larger than the sum of its proper divisors (29362930).

32816990 is a wasteful number, since it uses less digits than its factorization.

32816990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172747.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 32816990 is about 5728.6115246192. The cubic root of 32816990 is about 320.1593932487.

The spelling of 32816990 in words is "thirty-two million, eight hundred sixteen thousand, nine hundred ninety".