36921438 has 12 divisors (see below), whose sum is σ = 79996488. Its totient is φ = 12307140.

The previous prime is 36921421. The next prime is 36921439. The reversal of 36921438 is 83412963.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36921439) 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, 1025578 + ... + 1025613.

It is an arithmetic number, because the mean of its divisors is an integer number (6666374).

Almost surely, 2^36921438 is an apocalyptic number.

36921438 is an abundant number, since it is smaller than the sum of its proper divisors (43075050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36921438 is a wasteful number, since it uses less digits than its factorization.

36921438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051199 (or 2051196 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 36921438 is about 6076.3013420995. The cubic root of 36921438 is about 332.9861747906.

The spelling of 36921438 in words is "thirty-six million, nine hundred twenty-one thousand, four hundred thirty-eight".