72281334 has 16 divisors (see below), whose sum is σ = 144664560. Its totient is φ = 24076800.

The previous prime is 72281329. The next prime is 72281351. The reversal of 72281334 is 43318227.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7462 + ... + 14150.

It is an arithmetic number, because the mean of its divisors is an integer number (9041535).

Almost surely, 2^72281334 is an apocalyptic number.

72281334 is an abundant number, since it is smaller than the sum of its proper divisors (72383226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72281334 is a wasteful number, since it uses less digits than its factorization.

72281334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8495.

The product of its digits is 8064, while the sum is 30.

The square root of 72281334 is about 8501.8429766728. The cubic root of 72281334 is about 416.5579106734.

The spelling of 72281334 in words is "seventy-two million, two hundred eighty-one thousand, three hundred thirty-four".