72281877 has 8 divisors (see below), whose sum is σ = 98194464. Its totient is φ = 47278608.

The previous prime is 72281873. The next prime is 72281887. The reversal of 72281877 is 77818227.

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

It is not a de Polignac number, because 72281877 - 2² = 72281873 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 227143 + ... + 227460.

It is an arithmetic number, because the mean of its divisors is an integer number (12274308).

Almost surely, 2^72281877 is an apocalyptic number.

It is an amenable number.

72281877 is a deficient number, since it is larger than the sum of its proper divisors (25912587).

72281877 is a wasteful number, since it uses less digits than its factorization.

72281877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454659.

The product of its digits is 87808, while the sum is 42.

The square root of 72281877 is about 8501.8749108652. The cubic root of 72281877 is about 416.5589537752.

The spelling of 72281877 in words is "seventy-two million, two hundred eighty-one thousand, eight hundred seventy-seven".