128614612 has 72 divisors (see below), whose sum is σ = 271048680. Its totient is φ = 53222400.

The previous prime is 128614609. The next prime is 128614637. The reversal of 128614612 is 216416821.

It can be written as a sum of positive squares in 4 ways, for example, as 35569296 + 93045316 = 5964^2 + 9646^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1273362 + ... + 1273462.

It is an arithmetic number, because the mean of its divisors is an integer number (3764565).

Almost surely, 2^128614612 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 128614612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135524340).

128614612 is an abundant number, since it is smaller than the sum of its proper divisors (142434068).

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

128614612 is a wasteful number, since it uses less digits than its factorization.

128614612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 272 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 128614612 is about 11340.8382406240. The cubic root of 128614612 is about 504.7737600458.

The spelling of 128614612 in words is "one hundred twenty-eight million, six hundred fourteen thousand, six hundred twelve".