32248781 has 2 divisors, whose sum is σ = 32248782. Its totient is φ = 32248780.

The previous prime is 32248771. The next prime is 32248817. The reversal of 32248781 is 18784223.

Together with next prime (32248817) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20620681 + 11628100 = 4541^2 + 3410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32248781 is a prime.

It is a super-2 number, since 2×32248781² = 2079967751971922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32248771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16124390 + 16124391.

It is an arithmetic number, because the mean of its divisors is an integer number (16124391).

Almost surely, 2^32248781 is an apocalyptic number.

It is an amenable number.

32248781 is a deficient number, since it is larger than the sum of its proper divisors (1).

32248781 is an equidigital number, since it uses as much as digits as its factorization.

32248781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 35.

The square root of 32248781 is about 5678.8010178206. The cubic root of 32248781 is about 318.3008274939.

The spelling of 32248781 in words is "thirty-two million, two hundred forty-eight thousand, seven hundred eighty-one".