88133780 has 96 divisors (see below), whose sum is σ = 235872000. Its totient is φ = 26929152.

The previous prime is 88133767. The next prime is 88133783. The reversal of 88133780 is 8733188.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88133783) 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, 44246 + ... + 46194.

It is an arithmetic number, because the mean of its divisors is an integer number (2457000).

Almost surely, 2^88133780 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 88133780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117936000).

88133780 is an abundant number, since it is smaller than the sum of its proper divisors (147738220).

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

88133780 is a wasteful number, since it uses less digits than its factorization.

88133780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001 (or 1999 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 88133780 is about 9387.9593096690. The cubic root of 88133780 is about 445.0213010045.

The spelling of 88133780 in words is "eighty-eight million, one hundred thirty-three thousand, seven hundred eighty".