123790000 has 50 divisors (see below), whose sum is σ = 299732180. Its totient is φ = 49512000.

The previous prime is 123789989. The next prime is 123790001. The reversal of 123790000 is 97321.

It is a tau number, because it is divible by the number of its divisors (50).

It is not an unprimeable number, because it can be changed into a prime (123790001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3811 + ... + 16189.

Almost surely, 2^123790000 is an apocalyptic number.

123790000 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 123790000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149866090).

123790000 is an abundant number, since it is smaller than the sum of its proper divisors (175942180).

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

123790000 is an equidigital number, since it uses as much as digits as its factorization.

123790000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12407 (or 12386 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 123790000 is about 11126.0954516847. The cubic root of 123790000 is about 498.3814328008.

The spelling of 123790000 in words is "one hundred twenty-three million, seven hundred ninety thousand".