134015728 has 160 divisors (see below), whose sum is σ = 348549120. Its totient is φ = 48787200.

The previous prime is 134015639. The next prime is 134015737. The reversal of 134015728 is 827510431.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 134015728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4323073 + ... + 4323103.

It is an arithmetic number, because the mean of its divisors is an integer number (2178432).

Almost surely, 2^134015728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134015728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174274560).

134015728 is an abundant number, since it is smaller than the sum of its proper divisors (214533392).

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

134015728 is a wasteful number, since it uses less digits than its factorization.

134015728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 134015728 is about 11576.5162289870. The cubic root of 134015728 is about 511.7430147519.

The spelling of 134015728 in words is "one hundred thirty-four million, fifteen thousand, seven hundred twenty-eight".