15000420 has 24 divisors (see below), whose sum is σ = 42001344. Its totient is φ = 4000096.

The previous prime is 15000413. The next prime is 15000451. The reversal of 15000420 is 2400051.

15000420 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 15000396 and 15000405.

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, 124944 + ... + 125063.

It is an arithmetic number, because the mean of its divisors is an integer number (1750056).

Almost surely, 2^15000420 is an apocalyptic number.

15000420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15000420 is an abundant number, since it is smaller than the sum of its proper divisors (27000924).

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

15000420 is a wasteful number, since it uses less digits than its factorization.

15000420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250019 (or 250017 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 15000420 is about 3873.0375675947. The cubic root of 15000420 is about 246.6235092095.

Adding to 15000420 its reverse (2400051), we get a palindrome (17400471).

The spelling of 15000420 in words is "fifteen million, four hundred twenty", and thus it is an aban number.