128885092 has 72 divisors (see below), whose sum is σ = 284062464. Its totient is φ = 50819328.

The previous prime is 128885063. The next prime is 128885101. The reversal of 128885092 is 290588821.

It is a super-2 number, since 2×128885092² = 33222733879696928, which contains 22 as substring.

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, 156193 + ... + 157015.

It is an arithmetic number, because the mean of its divisors is an integer number (3945312).

Almost surely, 2^128885092 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 128885092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142031232).

128885092 is an abundant number, since it is smaller than the sum of its proper divisors (155177372).

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

128885092 is a wasteful number, since it uses less digits than its factorization.

128885092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 896 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 128885092 is about 11352.7570219749. The cubic root of 128885092 is about 505.1273632291.

It can be divided in two parts, 12888 and 5092, that multiplied together give a triangular number (65625696 = T₁₁₄₅₆).

The spelling of 128885092 in words is "one hundred twenty-eight million, eight hundred eighty-five thousand, ninety-two".