123247800 has 288 divisors, whose sum is σ = 467157600. Its totient is φ = 28892160.

The previous prime is 123247799. The next prime is 123247801. The reversal of 123247800 is 8742321.

It is an interprime number because it is at equal distance from previous prime (123247799) and next prime (123247801).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123247801) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 538086 + ... + 538314.

It is an arithmetic number, because the mean of its divisors is an integer number (1622075).

Almost surely, 2^123247800 is an apocalyptic number.

123247800 is a gapful number since it is divisible by the number (10) 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 123247800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233578800).

123247800 is an abundant number, since it is smaller than the sum of its proper divisors (343909800).

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

123247800 is a wasteful number, since it uses less digits than its factorization.

123247800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 123247800 is about 11101.7025721283. The cubic root of 123247800 is about 497.6527312356.

The spelling of 123247800 in words is "one hundred twenty-three million, two hundred forty-seven thousand, eight hundred".