32621428 has 12 divisors (see below), whose sum is σ = 65242912. Its totient is φ = 13980600.

The previous prime is 32621417. The next prime is 32621441. The reversal of 32621428 is 82412623.

32621428 is an admirable number.

It is a hoax number, since the sum of its digits (28) 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 (28), and also a Moran number because the ratio is a prime number: 1165051 = 32621428 / (3 + 2 + 6 + 2 + 1 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 32621396 and 32621405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582498 + ... + 582553.

Almost surely, 2^32621428 is an apocalyptic number.

It is an amenable number.

32621428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

32621428 is a wasteful number, since it uses less digits than its factorization.

32621428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165062 (or 1165060 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 32621428 is about 5711.5171364533. The cubic root of 32621428 is about 319.5221644380.

The spelling of 32621428 in words is "thirty-two million, six hundred twenty-one thousand, four hundred twenty-eight".