36197972 has 6 divisors (see below), whose sum is σ = 63346458. Its totient is φ = 18098984.

The previous prime is 36197971. The next prime is 36197989. The reversal of 36197972 is 27979163.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20484676 + 15713296 = 4526^2 + 3964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36197971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4524743 + ... + 4524750.

It is an arithmetic number, because the mean of its divisors is an integer number (10557743).

Almost surely, 2^36197972 is an apocalyptic number.

It is an amenable number.

36197972 is a deficient number, since it is larger than the sum of its proper divisors (27148486).

36197972 is a wasteful number, since it uses less digits than its factorization.

36197972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9049497 (or 9049495 counting only the distinct ones).

The product of its digits is 142884, while the sum is 44.

The square root of 36197972 is about 6016.4750477335. The cubic root of 36197972 is about 330.7968864896.

The spelling of 36197972 in words is "thirty-six million, one hundred ninety-seven thousand, nine hundred seventy-two".