36821572 has 6 divisors (see below), whose sum is σ = 64437758. Its totient is φ = 18410784.

The previous prime is 36821557. The next prime is 36821581. The reversal of 36821572 is 27512863.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26873856 + 9947716 = 5184^2 + 3154^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4602693 + ... + 4602700.

Almost surely, 2^36821572 is an apocalyptic number.

It is an amenable number.

36821572 is a deficient number, since it is larger than the sum of its proper divisors (27616186).

36821572 is a wasteful number, since it uses less digits than its factorization.

36821572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9205397 (or 9205395 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 36821572 is about 6068.0781141973. The cubic root of 36821572 is about 332.6856806753.

The spelling of 36821572 in words is "thirty-six million, eight hundred twenty-one thousand, five hundred seventy-two".