36721990 has 8 divisors (see below), whose sum is σ = 66099600. Its totient is φ = 14688792.

The previous prime is 36721987. The next prime is 36721999. The reversal of 36721990 is 9912763.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36721999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1836090 + ... + 1836109.

It is an arithmetic number, because the mean of its divisors is an integer number (8262450).

Almost surely, 2^36721990 is an apocalyptic number.

36721990 is a deficient number, since it is larger than the sum of its proper divisors (29377610).

36721990 is a wasteful number, since it uses less digits than its factorization.

36721990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672206.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 36721990 is about 6059.8671602602. The cubic root of 36721990 is about 332.3854996105.

The spelling of 36721990 in words is "thirty-six million, seven hundred twenty-one thousand, nine hundred ninety".