370728649 has 4 divisors (see below), whose sum is σ = 370893460. Its totient is φ = 370563840.

The previous prime is 370728619. The next prime is 370728661. The reversal of 370728649 is 946827073.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 946827073 = 1279 ⋅740287.

It can be written as a sum of positive squares in 2 ways, for example, as 210453049 + 160275600 = 14507^2 + 12660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-370728649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 370728599 and 370728608.

It is not an unprimeable number, because it can be changed into a prime (370728619) 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, 78984 + ... + 83545.

It is an arithmetic number, because the mean of its divisors is an integer number (92723365).

Almost surely, 2^370728649 is an apocalyptic number.

It is an amenable number.

370728649 is a deficient number, since it is larger than the sum of its proper divisors (164811).

370728649 is a wasteful number, since it uses less digits than its factorization.

370728649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164810.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 370728649 is about 19254.3150748086. The cubic root of 370728649 is about 718.3763884212.

The spelling of 370728649 in words is "three hundred seventy million, seven hundred twenty-eight thousand, six hundred forty-nine".