1299888 has 100 divisors (see below), whose sum is σ = 4051080. Its totient is φ = 400896.

The previous prime is 1299887. The next prime is 1299899. The reversal of 1299888 is 8889921.

It is a nude number because it is divisible by every one of its digits.

Its product of digits (82944) is a multiple of the sum of its prime divisors (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22003 + ... + 22061.

2^1299888 is an apocalyptic number.

1299888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1299888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2025540).

1299888 is an abundant number, since it is smaller than the sum of its proper divisors (2751192).

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

1299888 is a wasteful number, since it uses less digits than its factorization.

1299888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 81 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 1299888 is about 1140.1263087921. The cubic root of 1299888 is about 109.1361539596.

It can be divided in two parts, 1299 and 888, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1299888 in words is "one million, two hundred ninety-nine thousand, eight hundred eighty-eight".