12500730 has 160 divisors (see below), whose sum is σ = 38890368. Its totient is φ = 2851200.

The previous prime is 12500693. The next prime is 12500749. The reversal of 12500730 is 3700521.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 204900 + ... + 204960.

Almost surely, 2^12500730 is an apocalyptic number.

12500730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12500730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19445184).

12500730 is an abundant number, since it is smaller than the sum of its proper divisors (26389638).

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

12500730 is a wasteful number, since it uses less digits than its factorization.

12500730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 12500730 is about 3535.6371420156. The cubic root of 12500730 is about 232.0839594058.

The spelling of 12500730 in words is "twelve million, five hundred thousand, seven hundred thirty".