15117020 has 24 divisors (see below), whose sum is σ = 32268768. Its totient is φ = 5947200.

The previous prime is 15117013. The next prime is 15117041. The reversal of 15117020 is 2071151.

It is a self number, because there is not a number n which added to its sum of digits gives 15117020.

It is a congruent number.

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, 4976 + ... + 7415.

It is an arithmetic number, because the mean of its divisors is an integer number (1344532).

Almost surely, 2^15117020 is an apocalyptic number.

15117020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15117020 is an abundant number, since it is smaller than the sum of its proper divisors (17151748).

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

15117020 is a wasteful number, since it uses less digits than its factorization.

15117020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12461 (or 12459 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 15117020 is about 3888.0612135099. The cubic root of 15117020 is about 247.2608716431.

Adding to 15117020 its reverse (2071151), we get a palindrome (17188171).

It can be divided in two parts, 151 and 17020, that added together give a palindrome (17171).

The spelling of 15117020 in words is "fifteen million, one hundred seventeen thousand, twenty".