122724836 has 24 divisors (see below), whose sum is σ = 244896120. Its totient is φ = 53309952.

The previous prime is 122724829. The next prime is 122724851. The reversal of 122724836 is 638427221.

It can be written as a sum of positive squares in 4 ways, for example, as 7806436 + 114918400 = 2794^2 + 10720^2 .

It is a super-2 number, since 2×122724836² = 30122770742453792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122724796 and 122724805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68531 + ... + 70298.

It is an arithmetic number, because the mean of its divisors is an integer number (10204005).

Almost surely, 2^122724836 is an apocalyptic number.

It is an amenable number.

122724836 is a deficient number, since it is larger than the sum of its proper divisors (122171284).

122724836 is a wasteful number, since it uses less digits than its factorization.

122724836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138863 (or 138861 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 122724836 is about 11078.1242094499. The cubic root of 122724836 is about 496.9478547285.

The spelling of 122724836 in words is "one hundred twenty-two million, seven hundred twenty-four thousand, eight hundred thirty-six".