72883445 has 8 divisors (see below), whose sum is σ = 89593560. Its totient is φ = 56884480.

The previous prime is 72883439. The next prime is 72883453. The reversal of 72883445 is 54438827.

It can be written as a sum of positive squares in 4 ways, for example, as 54289 + 72829156 = 233^2 + 8534^2 .

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

It is not a de Polignac number, because 72883445 - 2⁸ = 72883189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 177560 + ... + 177969.

It is an arithmetic number, because the mean of its divisors is an integer number (11199195).

Almost surely, 2^72883445 is an apocalyptic number.

It is an amenable number.

72883445 is a deficient number, since it is larger than the sum of its proper divisors (16710115).

72883445 is a wasteful number, since it uses less digits than its factorization.

72883445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355575.

The product of its digits is 215040, while the sum is 41.

The square root of 72883445 is about 8537.1801550629. The cubic root of 72883445 is about 417.7113706134.

The spelling of 72883445 in words is "seventy-two million, eight hundred eighty-three thousand, four hundred forty-five".