32663040 has 80 divisors (see below), whose sum is σ = 104444208. Its totient is φ = 8708096.

The previous prime is 32663027. The next prime is 32663083. The reversal of 32663040 is 4036623.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 32663040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5554 + ... + 9806.

Almost surely, 2^32663040 is an apocalyptic number.

32663040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32663040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52222104).

32663040 is an abundant number, since it is smaller than the sum of its proper divisors (71781168).

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

32663040 is an equidigital number, since it uses as much as digits as its factorization.

32663040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279 (or 4263 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 32663040 is about 5715.1587904449. The cubic root of 32663040 is about 319.6579678824.

Adding to 32663040 its reverse (4036623), we get a palindrome (36699663).

The spelling of 32663040 in words is "thirty-two million, six hundred sixty-three thousand, forty".