88421440 has 56 divisors (see below), whose sum is σ = 221650560. Its totient is φ = 33504768.

The previous prime is 88421423. The next prime is 88421467. The reversal of 88421440 is 4412488.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1192 + ... + 13351.

Almost surely, 2^88421440 is an apocalyptic number.

88421440 is a gapful number since it is divisible by the number (80) 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 88421440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110825280).

88421440 is an abundant number, since it is smaller than the sum of its proper divisors (133229120).

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

88421440 is a wasteful number, since it uses less digits than its factorization.

88421440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14579 (or 14569 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 88421440 is about 9403.2675171985. The cubic root of 88421440 is about 445.5049438011.

The spelling of 88421440 in words is "eighty-eight million, four hundred twenty-one thousand, four hundred forty".