32872621 has 4 divisors (see below), whose sum is σ = 33211612. Its totient is φ = 32533632.

The previous prime is 32872601. The next prime is 32872627. The reversal of 32872621 is 12627823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12627823 = 13 ⋅971371.

It can be written as a sum of positive squares in 2 ways, for example, as 26894596 + 5978025 = 5186^2 + 2445^2 .

It is a cyclic number.

It is not a de Polignac number, because 32872621 - 2²¹ = 30775469 is a prime.

It is a super-2 number, since 2×32872621² = 2161218422819282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32872627) 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, 169350 + ... + 169543.

It is an arithmetic number, because the mean of its divisors is an integer number (8302903).

Almost surely, 2^32872621 is an apocalyptic number.

It is an amenable number.

32872621 is a deficient number, since it is larger than the sum of its proper divisors (338991).

32872621 is an equidigital number, since it uses as much as digits as its factorization.

32872621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338990.

The product of its digits is 8064, while the sum is 31.

The square root of 32872621 is about 5733.4650081779. The cubic root of 32872621 is about 320.3402013449.

The spelling of 32872621 in words is "thirty-two million, eight hundred seventy-two thousand, six hundred twenty-one".