123732730 has 32 divisors (see below), whose sum is σ = 243891648. Its totient is φ = 44822400.

The previous prime is 123732703. The next prime is 123732743. The reversal of 123732730 is 37237321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28909 + ... + 32911.

It is an arithmetic number, because the mean of its divisors is an integer number (7621614).

Almost surely, 2^123732730 is an apocalyptic number.

123732730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123732730 is a deficient number, since it is larger than the sum of its proper divisors (120158918).

123732730 is a wasteful number, since it uses less digits than its factorization.

123732730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 123732730 is about 11123.5214747849. The cubic root of 123732730 is about 498.3045641593.

The spelling of 123732730 in words is "one hundred twenty-three million, seven hundred thirty-two thousand, seven hundred thirty".