32890621 has 4 divisors (see below), whose sum is σ = 34320672. Its totient is φ = 31460572.

The previous prime is 32890619. The next prime is 32890633. The reversal of 32890621 is 12609823.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 32890621 - 2¹ = 32890619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32890601) 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, 714991 + ... + 715036.

It is an arithmetic number, because the mean of its divisors is an integer number (8580168).

Almost surely, 2^32890621 is an apocalyptic number.

It is an amenable number.

32890621 is a deficient number, since it is larger than the sum of its proper divisors (1430051).

32890621 is a wasteful number, since it uses less digits than its factorization.

32890621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430050.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 32890621 is about 5735.0345247435. The cubic root of 32890621 is about 320.3986600391.

The spelling of 32890621 in words is "thirty-two million, eight hundred ninety thousand, six hundred twenty-one".