15200020 has 48 divisors (see below), whose sum is σ = 35171136. Its totient is φ = 5517600.

The previous prime is 15200011. The next prime is 15200021. The reversal of 15200020 is 2000251.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15200021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26335 + ... + 26905.

It is an arithmetic number, because the mean of its divisors is an integer number (732732).

Almost surely, 2^15200020 is an apocalyptic number.

15200020 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 15200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17585568).

15200020 is an abundant number, since it is smaller than the sum of its proper divisors (19971116).

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

15200020 is a wasteful number, since it uses less digits than its factorization.

15200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 15200020 is about 3898.7203028686. The cubic root of 15200020 is about 247.7125745718.

Adding to 15200020 its reverse (2000251), we get a palindrome (17200271).

The spelling of 15200020 in words is "fifteen million, two hundred thousand, twenty".