15000030 has 24 divisors (see below), whose sum is σ = 39000312. Its totient is φ = 3999984.

The previous prime is 15000017. The next prime is 15000031. The reversal of 15000030 is 3000051.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 14999976 and 15000021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15000031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83244 + ... + 83423.

It is an arithmetic number, because the mean of its divisors is an integer number (1625013).

Almost surely, 2^15000030 is an apocalyptic number.

15000030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15000030 is an abundant number, since it is smaller than the sum of its proper divisors (24000282).

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

15000030 is a wasteful number, since it uses less digits than its factorization.

15000030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166680 (or 166677 counting only the distinct ones).

The product of its (nonzero) digits is 15, while the sum is 9.

The square root of 15000030 is about 3872.9872191888. The cubic root of 15000030 is about 246.6213718471.

Adding to 15000030 its reverse (3000051), we get a palindrome (18000081).

The spelling of 15000030 in words is "fifteen million, thirty", and thus it is an aban number and an uban number.