72281335 has 8 divisors (see below), whose sum is σ = 99128736. Its totient is φ = 49564320.

The previous prime is 72281329. The next prime is 72281351. The reversal of 72281335 is 53318227.

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

It is not a de Polignac number, because 72281335 - 2³ = 72281327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72281297 and 72281306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032556 + ... + 1032625.

It is an arithmetic number, because the mean of its divisors is an integer number (12391092).

Almost surely, 2^72281335 is an apocalyptic number.

72281335 is a deficient number, since it is larger than the sum of its proper divisors (26847401).

72281335 is a wasteful number, since it uses less digits than its factorization.

72281335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065193.

The product of its digits is 10080, while the sum is 31.

The square root of 72281335 is about 8501.8430354835. The cubic root of 72281335 is about 416.5579125944.

The spelling of 72281335 in words is "seventy-two million, two hundred eighty-one thousand, three hundred thirty-five".