72281876 has 12 divisors (see below), whose sum is σ = 126691572. Its totient is φ = 36084288.

The previous prime is 72281873. The next prime is 72281887. The reversal of 72281876 is 67818227.

It can be written as a sum of positive squares in 2 ways, for example, as 6250000 + 66031876 = 2500^2 + 8126^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72281873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11225 + ... + 16448.

It is an arithmetic number, because the mean of its divisors is an integer number (10557631).

Almost surely, 2^72281876 is an apocalyptic number.

It is an amenable number.

72281876 is a deficient number, since it is larger than the sum of its proper divisors (54409696).

72281876 is a wasteful number, since it uses less digits than its factorization.

72281876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28330 (or 28328 counting only the distinct ones).

The product of its digits is 75264, while the sum is 41.

The square root of 72281876 is about 8501.8748520547. The cubic root of 72281876 is about 416.5589518542.

The spelling of 72281876 in words is "seventy-two million, two hundred eighty-one thousand, eight hundred seventy-six".