123532280 has 16 divisors (see below), whose sum is σ = 277947720. Its totient is φ = 49412896.

The previous prime is 123532247. The next prime is 123532289. The reversal of 123532280 is 82235321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123532289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1544114 + ... + 1544193.

Almost surely, 2^123532280 is an apocalyptic number.

123532280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123532280 is an abundant number, since it is smaller than the sum of its proper divisors (154415440).

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

123532280 is a wasteful number, since it uses less digits than its factorization.

123532280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088318 (or 3088314 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 123532280 is about 11114.5076364183. The cubic root of 123532280 is about 498.0353302569.

The spelling of 123532280 in words is "one hundred twenty-three million, five hundred thirty-two thousand, two hundred eighty".