122723644 has 12 divisors (see below), whose sum is σ = 215304768. Its totient is φ = 61208000.

The previous prime is 122723639. The next prime is 122723693. The reversal of 122723644 is 446327221.

It is a happy number.

122723644 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×122723644² = 30122185593277472, which contains 22 as substring.

122723644 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36652 + ... + 39859.

It is an arithmetic number, because the mean of its divisors is an integer number (17942064).

Almost surely, 2^122723644 is an apocalyptic number.

It is an amenable number.

122723644 is a deficient number, since it is larger than the sum of its proper divisors (92581124).

122723644 is a wasteful number, since it uses less digits than its factorization.

122723644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76916 (or 76914 counting only the distinct ones).

The product of its digits is 16128, while the sum is 31.

The square root of 122723644 is about 11078.0704095975. The cubic root of 122723644 is about 496.9462458074.

The spelling of 122723644 in words is "one hundred twenty-two million, seven hundred twenty-three thousand, six hundred forty-four".