32661456 has 80 divisors (see below), whose sum is σ = 90470400. Its totient is φ = 10122624.

The previous prime is 32661443. The next prime is 32661493. The reversal of 32661456 is 65416623.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53505 + ... + 54111.

It is an arithmetic number, because the mean of its divisors is an integer number (1130880).

Almost surely, 2^32661456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32661456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45235200).

32661456 is an abundant number, since it is smaller than the sum of its proper divisors (57808944).

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

32661456 is a wasteful number, since it uses less digits than its factorization.

32661456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696 (or 690 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 32661456 is about 5715.0202099380. The cubic root of 32661456 is about 319.6528005087.

The spelling of 32661456 in words is "thirty-two million, six hundred sixty-one thousand, four hundred fifty-six".