123722984 has 144 divisors (see below), whose sum is σ = 316965600. Its totient is φ = 44193600.

The previous prime is 123722983. The next prime is 123722987. The reversal of 123722984 is 489227321.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (123722983) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3991049 + ... + 3991079.

It is an arithmetic number, because the mean of its divisors is an integer number (2201150).

Almost surely, 2^123722984 is an apocalyptic number.

123722984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123722984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158482800).

123722984 is an abundant number, since it is smaller than the sum of its proper divisors (193242616).

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

123722984 is a wasteful number, since it uses less digits than its factorization.

123722984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 70 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 123722984 is about 11123.0833854647. The cubic root of 123722984 is about 498.2914805724.

The spelling of 123722984 in words is "one hundred twenty-three million, seven hundred twenty-two thousand, nine hundred eighty-four".