32628731 has 2 divisors, whose sum is σ = 32628732. Its totient is φ = 32628730.

The previous prime is 32628727. The next prime is 32628751. The reversal of 32628731 is 13782623.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32628731 - 2² = 32628727 is a prime.

It is a super-2 number, since 2×32628731² = 2129268173340722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (32628751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16314365 + 16314366.

It is an arithmetic number, because the mean of its divisors is an integer number (16314366).

Almost surely, 2^32628731 is an apocalyptic number.

32628731 is a deficient number, since it is larger than the sum of its proper divisors (1).

32628731 is an equidigital number, since it uses as much as digits as its factorization.

32628731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 32628731 is about 5712.1564229282. The cubic root of 32628731 is about 319.5460066015.

The spelling of 32628731 in words is "thirty-two million, six hundred twenty-eight thousand, seven hundred thirty-one".