72122070 has 16 divisors (see below), whose sum is σ = 173093040. Its totient is φ = 19232544.

The previous prime is 72122059. The next prime is 72122077. The reversal of 72122070 is 7022127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72122077) 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, 1202005 + ... + 1202064.

It is an arithmetic number, because the mean of its divisors is an integer number (10818315).

Almost surely, 2^72122070 is an apocalyptic number.

72122070 is an abundant number, since it is smaller than the sum of its proper divisors (100970970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72122070 is a wasteful number, since it uses less digits than its factorization.

72122070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404079.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 72122070 is about 8492.4713717504. The cubic root of 72122070 is about 416.2517391192.

Adding to 72122070 its reverse (7022127), we get a palindrome (79144197).

It can be divided in two parts, 721 and 22070, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 72122070 in words is "seventy-two million, one hundred twenty-two thousand, seventy".