15128955 has 12 divisors (see below), whose sum is σ = 26223600. Its totient is φ = 8068752.

The previous prime is 15128951. The next prime is 15128969. The reversal of 15128955 is 55982151.

It is a happy number.

It is not a de Polignac number, because 15128955 - 2² = 15128951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15128951) 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, 168055 + ... + 168144.

It is an arithmetic number, because the mean of its divisors is an integer number (2185300).

Almost surely, 2^15128955 is an apocalyptic number.

15128955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15128955 is a deficient number, since it is larger than the sum of its proper divisors (11094645).

15128955 is a wasteful number, since it uses less digits than its factorization.

15128955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336210 (or 336207 counting only the distinct ones).

The product of its digits is 18000, while the sum is 36.

The square root of 15128955 is about 3889.5957373485. The cubic root of 15128955 is about 247.3259259597.

It can be divided in two parts, 1512895 and 5, that added together give a square (1512900 = 1230²).

The spelling of 15128955 in words is "fifteen million, one hundred twenty-eight thousand, nine hundred fifty-five".