15238020 has 144 divisors (see below), whose sum is σ = 51020928. Its totient is φ = 3386880.

The previous prime is 15238007. The next prime is 15238031. The reversal of 15238020 is 2083251.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 208704 + ... + 208776.

It is an arithmetic number, because the mean of its divisors is an integer number (354312).

Almost surely, 2^15238020 is an apocalyptic number.

15238020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15238020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25510464).

15238020 is an abundant number, since it is smaller than the sum of its proper divisors (35782908).

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

15238020 is a wasteful number, since it uses less digits than its factorization.

15238020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 15238020 is about 3903.5906547690. The cubic root of 15238020 is about 247.9188296620.

The spelling of 15238020 in words is "fifteen million, two hundred thirty-eight thousand, twenty".