72276028 has 24 divisors (see below), whose sum is σ = 143982720. Its totient is φ = 31423920.

The previous prime is 72276023. The next prime is 72276067. The reversal of 72276028 is 82067227.

It is a junction number, because it is equal to n+sod(n) for n = 72275984 and 72276002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72276023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34698 + ... + 36721.

It is an arithmetic number, because the mean of its divisors is an integer number (5999280).

Almost surely, 2^72276028 is an apocalyptic number.

It is an amenable number.

72276028 is a deficient number, since it is larger than the sum of its proper divisors (71706692).

72276028 is a wasteful number, since it uses less digits than its factorization.

72276028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71457 (or 71455 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 72276028 is about 8501.5309209577. The cubic root of 72276028 is about 416.5477175837.

It can be divided in two parts, 7227602 and 8, that multiplied together give a square (57820816 = 7604²).

The spelling of 72276028 in words is "seventy-two million, two hundred seventy-six thousand, twenty-eight".