372728261 has 2 divisors, whose sum is σ = 372728262. Its totient is φ = 372728260.

The previous prime is 372728201. The next prime is 372728333. The reversal of 372728261 is 162827273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364428100 + 8300161 = 19090^2 + 2881^2 .

It is a cyclic number.

It is not a de Polignac number, because 372728261 - 2²⁶ = 305619397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (372728201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186364130 + 186364131.

It is an arithmetic number, because the mean of its divisors is an integer number (186364131).

Almost surely, 2^372728261 is an apocalyptic number.

It is an amenable number.

372728261 is a deficient number, since it is larger than the sum of its proper divisors (1).

372728261 is an equidigital number, since it uses as much as digits as its factorization.

372728261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 38.

The square root of 372728261 is about 19306.1715780214. The cubic root of 372728261 is about 719.6656504448.

The spelling of 372728261 in words is "three hundred seventy-two million, seven hundred twenty-eight thousand, two hundred sixty-one".