36289261 has 6 divisors (see below), whose sum is σ = 36685770. Its totient is φ = 35894016.

The previous prime is 36289243. The next prime is 36289273. The reversal of 36289261 is 16298263.

It can be written as a sum of positive squares in 3 ways, for example, as 31427236 + 4862025 = 5606^2 + 2205^2 .

It is not a de Polignac number, because 36289261 - 2⁷ = 36289133 is a prime.

It is a super-2 number, since 2×36289261² = 2633820927852242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36289261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36289241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62605 + ... + 63181.

It is an arithmetic number, because the mean of its divisors is an integer number (6114295).

Almost surely, 2^36289261 is an apocalyptic number.

It is an amenable number.

36289261 is a deficient number, since it is larger than the sum of its proper divisors (396509).

36289261 is an frugal number, since it uses more digits than its factorization.

36289261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263 (or 686 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 36289261 is about 6024.0568556414. The cubic root of 36289261 is about 331.0747360016.

The spelling of 36289261 in words is "thirty-six million, two hundred eighty-nine thousand, two hundred sixty-one".