1605428088 has 128 divisors (see below), whose sum is σ = 4492972800. Its totient is φ = 473907200.

The previous prime is 1605428059. The next prime is 1605428089. The reversal of 1605428088 is 8808245061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605428089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2504248 + ... + 2504888.

It is an arithmetic number, because the mean of its divisors is an integer number (35101350).

Almost surely, 2^1605428088 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 1605428088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2246486400).

1605428088 is an abundant number, since it is smaller than the sum of its proper divisors (2887544712).

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

1605428088 is a wasteful number, since it uses less digits than its factorization.

1605428088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 1605428088 is about 40067.7936502623. The cubic root of 1605428088 is about 1170.9282545075.

The spelling of 1605428088 in words is "one billion, six hundred five million, four hundred twenty-eight thousand, eighty-eight".