72628022 has 4 divisors (see below), whose sum is σ = 108942036. Its totient is φ = 36314010.

The previous prime is 72628021. The next prime is 72628079. The reversal of 72628022 is 22082627.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72628021) 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 as a sum of consecutive naturals, namely, 18157004 + ... + 18157007.

It is an arithmetic number, because the mean of its divisors is an integer number (27235509).

Almost surely, 2^72628022 is an apocalyptic number.

72628022 is a deficient number, since it is larger than the sum of its proper divisors (36314014).

72628022 is a wasteful number, since it uses less digits than its factorization.

72628022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36314013.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 72628022 is about 8522.2075778521. The cubic root of 72628022 is about 417.2228373056. Note that the first 3 decimals are identical.

The spelling of 72628022 in words is "seventy-two million, six hundred twenty-eight thousand, twenty-two".