72882821 has 8 divisors (see below), whose sum is σ = 79584384. Its totient is φ = 66193920.

The previous prime is 72882809. The next prime is 72882833. The reversal of 72882821 is 12828827.

It is an interprime number because it is at equal distance from previous prime (72882809) and next prime (72882833).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72882821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72881821) 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, 12101 + ... + 17093.

It is an arithmetic number, because the mean of its divisors is an integer number (9948048).

Almost surely, 2^72882821 is an apocalyptic number.

It is an amenable number.

72882821 is a deficient number, since it is larger than the sum of its proper divisors (6701563).

72882821 is a wasteful number, since it uses less digits than its factorization.

72882821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6331.

The product of its digits is 28672, while the sum is 38.

The square root of 72882821 is about 8537.1436089596. The cubic root of 72882821 is about 417.7101785153.

The spelling of 72882821 in words is "seventy-two million, eight hundred eighty-two thousand, eight hundred twenty-one".