36878821 has 24 divisors (see below), whose sum is σ = 45866304. Its totient is φ = 29494080.

The previous prime is 36878801. The next prime is 36878827. The reversal of 36878821 is 12887863.

It is a happy number.

It is not a de Polignac number, because 36878821 - 2⁵ = 36878789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36878827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48081 + ... + 48841.

It is an arithmetic number, because the mean of its divisors is an integer number (1911096).

Almost surely, 2^36878821 is an apocalyptic number.

It is an amenable number.

36878821 is a deficient number, since it is larger than the sum of its proper divisors (8987483).

36878821 is a wasteful number, since it uses less digits than its factorization.

36878821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 834 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 36878821 is about 6072.7935087569. The cubic root of 36878821 is about 332.8580077411.

The spelling of 36878821 in words is "thirty-six million, eight hundred seventy-eight thousand, eight hundred twenty-one".