36721436 has 6 divisors (see below), whose sum is σ = 64262520. Its totient is φ = 18360716.

The previous prime is 36721417. The next prime is 36721439. The reversal of 36721436 is 63412763.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36721439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4590176 + ... + 4590183.

It is an arithmetic number, because the mean of its divisors is an integer number (10710420).

Almost surely, 2^36721436 is an apocalyptic number.

It is an amenable number.

36721436 is a deficient number, since it is larger than the sum of its proper divisors (27541084).

36721436 is a wasteful number, since it uses less digits than its factorization.

36721436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9180363 (or 9180361 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 36721436 is about 6059.8214495148. The cubic root of 36721436 is about 332.3838281098.

The spelling of 36721436 in words is "thirty-six million, seven hundred twenty-one thousand, four hundred thirty-six".