72870022 has 16 divisors (see below), whose sum is σ = 112300992. Its totient is φ = 35445760.

The previous prime is 72870013. The next prime is 72870023. The reversal of 72870022 is 22007827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72870023) 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, 14022 + ... + 18502.

It is an arithmetic number, because the mean of its divisors is an integer number (7018812).

Almost surely, 2^72870022 is an apocalyptic number.

72870022 is a deficient number, since it is larger than the sum of its proper divisors (39430970).

72870022 is a wasteful number, since it uses less digits than its factorization.

72870022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4703.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 72870022 is about 8536.3939693526. The cubic root of 72870022 is about 417.6857256311.

Adding to 72870022 its reverse (22007827), we get a palindrome (94877849).

The spelling of 72870022 in words is "seventy-two million, eight hundred seventy thousand, twenty-two".