72281847 has 16 divisors (see below), whose sum is σ = 109709568. Its totient is φ = 41902080.

The previous prime is 72281843. The next prime is 72281873. The reversal of 72281847 is 74818227.

It is not a de Polignac number, because 72281847 - 2² = 72281843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72281843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46858 + ... + 48375.

It is an arithmetic number, because the mean of its divisors is an integer number (6856848).

Almost surely, 2^72281847 is an apocalyptic number.

72281847 is a deficient number, since it is larger than the sum of its proper divisors (37427721).

72281847 is a wasteful number, since it uses less digits than its factorization.

72281847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95270.

The product of its digits is 50176, while the sum is 39.

The square root of 72281847 is about 8501.8731465484. The cubic root of 72281847 is about 416.5588961454.

The spelling of 72281847 in words is "seventy-two million, two hundred eighty-one thousand, eight hundred forty-seven".