72783529 has 16 divisors (see below), whose sum is σ = 90478080. Its totient is φ = 57009600.

The previous prime is 72783481. The next prime is 72783559. The reversal of 72783529 is 92538727.

It is a cyclic number.

It is not a de Polignac number, because 72783529 - 2¹¹ = 72781481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72783559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5232 + ... + 13150.

It is an arithmetic number, because the mean of its divisors is an integer number (5654880).

Almost surely, 2^72783529 is an apocalyptic number.

It is an amenable number.

72783529 is a deficient number, since it is larger than the sum of its proper divisors (17694551).

72783529 is a wasteful number, since it uses less digits than its factorization.

72783529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8040.

The product of its digits is 211680, while the sum is 43.

The square root of 72783529 is about 8531.3263329918. The cubic root of 72783529 is about 417.5204029854.

The spelling of 72783529 in words is "seventy-two million, seven hundred eighty-three thousand, five hundred twenty-nine".