123887380 has 24 divisors (see below), whose sum is σ = 260373960. Its totient is φ = 49514880.

The previous prime is 123887371. The next prime is 123887399. The reversal of 123887380 is 83788321.

It can be written as a sum of positive squares in 4 ways, for example, as 26193924 + 97693456 = 5118^2 + 9884^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 43026 + ... + 45814.

It is an arithmetic number, because the mean of its divisors is an integer number (10848915).

Almost surely, 2^123887380 is an apocalyptic number.

123887380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123887380 is an abundant number, since it is smaller than the sum of its proper divisors (136486580).

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

123887380 is a wasteful number, since it uses less digits than its factorization.

123887380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019 (or 5017 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 123887380 is about 11130.4707896836. The cubic root of 123887380 is about 498.5120832664.

The spelling of 123887380 in words is "one hundred twenty-three million, eight hundred eighty-seven thousand, three hundred eighty".