36428021 has 12 divisors (see below), whose sum is σ = 44219232. Its totient is φ = 29865528.

The previous prime is 36428011. The next prime is 36428023. The reversal of 36428021 is 12082463.

It is not a de Polignac number, because 36428021 - 2¹⁰ = 36426997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36428023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15035 + ... + 17288.

It is an arithmetic number, because the mean of its divisors is an integer number (3684936).

Almost surely, 2^36428021 is an apocalyptic number.

It is an amenable number.

36428021 is a deficient number, since it is larger than the sum of its proper divisors (7791211).

36428021 is a wasteful number, since it uses less digits than its factorization.

36428021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32360 (or 32353 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 36428021 is about 6035.5630226185. The cubic root of 36428021 is about 331.4961784095.

The spelling of 36428021 in words is "thirty-six million, four hundred twenty-eight thousand, twenty-one".