36721692 has 36 divisors (see below), whose sum is σ = 106085616. Its totient is φ = 10491840.

The previous prime is 36721687. The next prime is 36721693. The reversal of 36721692 is 29612763.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

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

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36721693) 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, 72609 + ... + 73112.

Almost surely, 2^36721692 is an apocalyptic number.

It is an amenable number.

36721692 is an abundant number, since it is smaller than the sum of its proper divisors (69363924).

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

36721692 is a wasteful number, since it uses less digits than its factorization.

36721692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145738 (or 145733 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 36721692 is about 6059.8425722126. The cubic root of 36721692 is about 332.3846005021.

The spelling of 36721692 in words is "thirty-six million, seven hundred twenty-one thousand, six hundred ninety-two".