36078721 has 16 divisors (see below), whose sum is σ = 42128640. Its totient is φ = 30260160.

The previous prime is 36078671. The next prime is 36078727. The reversal of 36078721 is 12787063.

It is not a de Polignac number, because 36078721 - 2⁷ = 36078593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36078727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113655 + ... + 113971.

It is an arithmetic number, because the mean of its divisors is an integer number (2633040).

Almost surely, 2^36078721 is an apocalyptic number.

It is an amenable number.

36078721 is a deficient number, since it is larger than the sum of its proper divisors (6049919).

36078721 is a wasteful number, since it uses less digits than its factorization.

36078721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 36078721 is about 6006.5565010245. The cubic root of 36078721 is about 330.4332265391.

The spelling of 36078721 in words is "thirty-six million, seventy-eight thousand, seven hundred twenty-one".