88729780 has 24 divisors (see below), whose sum is σ = 188257608. Its totient is φ = 35125248.

The previous prime is 88729759. The next prime is 88729787. The reversal of 88729780 is 8792788.

It can be written as a sum of positive squares in 4 ways, for example, as 2090916 + 86638864 = 1446^2 + 9308^2 .

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88729787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20929 + ... + 24808.

It is an arithmetic number, because the mean of its divisors is an integer number (7844067).

Almost surely, 2^88729780 is an apocalyptic number.

It is an amenable number.

88729780 is an abundant number, since it is smaller than the sum of its proper divisors (99527828).

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

88729780 is a wasteful number, since it uses less digits than its factorization.

88729780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45843 (or 45841 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 49.

The square root of 88729780 is about 9419.6486134038. The cubic root of 88729780 is about 446.0221925185.

The spelling of 88729780 in words is "eighty-eight million, seven hundred twenty-nine thousand, seven hundred eighty".