36278981 has 16 divisors (see below), whose sum is σ = 39398400. Its totient is φ = 33314688.

The previous prime is 36278953. The next prime is 36278987. The reversal of 36278981 is 18987263.

It is a cyclic number.

It is not a de Polignac number, because 36278981 - 2⁶ = 36278917 is a prime.

It is a super-2 number, since 2×36278981² = 2632328924796722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36278987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75500 + ... + 75978.

It is an arithmetic number, because the mean of its divisors is an integer number (2462400).

Almost surely, 2^36278981 is an apocalyptic number.

It is an amenable number.

36278981 is a deficient number, since it is larger than the sum of its proper divisors (3119419).

36278981 is a wasteful number, since it uses less digits than its factorization.

36278981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628.

The product of its digits is 145152, while the sum is 44.

The square root of 36278981 is about 6023.2035496071. The cubic root of 36278981 is about 331.0434708319.

The spelling of 36278981 in words is "thirty-six million, two hundred seventy-eight thousand, nine hundred eighty-one".