15028780134 has 16 divisors (see below), whose sum is σ = 30060313920. Its totient is φ = 5009134440.

The previous prime is 15028780127. The next prime is 15028780177. The reversal of 15028780134 is 43108782051.

It is a super-2 number, since 2×15028780134² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15028780092 and 15028780101.

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, 40044 + ... + 177935.

It is an arithmetic number, because the mean of its divisors is an integer number (1878769620).

Almost surely, 2^15028780134 is an apocalyptic number.

15028780134 is an abundant number, since it is smaller than the sum of its proper divisors (15031533786).

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

15028780134 is a wasteful number, since it uses less digits than its factorization.

15028780134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229475.

The product of its (nonzero) digits is 53760, while the sum is 39.

The spelling of 15028780134 in words is "fifteen billion, twenty-eight million, seven hundred eighty thousand, one hundred thirty-four".