123572636 has 12 divisors (see below), whose sum is σ = 235911480. Its totient is φ = 56169360.

The previous prime is 123572633. The next prime is 123572639. The reversal of 123572636 is 636275321.

It is an interprime number because it is at equal distance from previous prime (123572633) and next prime (123572639).

It is a junction number, because it is equal to n+sod(n) for n = 123572596 and 123572605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123572633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1404191 + ... + 1404278.

It is an arithmetic number, because the mean of its divisors is an integer number (19659290).

Almost surely, 2^123572636 is an apocalyptic number.

It is an amenable number.

123572636 is a deficient number, since it is larger than the sum of its proper divisors (112338844).

123572636 is a wasteful number, since it uses less digits than its factorization.

123572636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808484 (or 2808482 counting only the distinct ones).

The product of its digits is 45360, while the sum is 35.

The square root of 123572636 is about 11116.3229532071. The cubic root of 123572636 is about 498.0895577175.

The spelling of 123572636 in words is "one hundred twenty-three million, five hundred seventy-two thousand, six hundred thirty-six".