32788381 has 4 divisors (see below), whose sum is σ = 32919264. Its totient is φ = 32657500.

The previous prime is 32788373. The next prime is 32788391. The reversal of 32788381 is 18388723.

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 32788381 - 2³ = 32788373 is a prime.

It is a super-2 number, since 2×32788381² = 2150155857202322, 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 (32788321) 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, 65065 + ... + 65566.

It is an arithmetic number, because the mean of its divisors is an integer number (8229816).

Almost surely, 2^32788381 is an apocalyptic number.

It is an amenable number.

32788381 is a deficient number, since it is larger than the sum of its proper divisors (130883).

32788381 is a wasteful number, since it uses less digits than its factorization.

32788381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130882.

The product of its digits is 64512, while the sum is 40.

The square root of 32788381 is about 5726.1139527606. The cubic root of 32788381 is about 320.0663306509.

The spelling of 32788381 in words is "thirty-two million, seven hundred eighty-eight thousand, three hundred eighty-one".