88811540 has 24 divisors (see below), whose sum is σ = 187459272. Its totient is φ = 35342720.

The previous prime is 88811539. The next prime is 88811549. The reversal of 88811540 is 4511888.

It can be written as a sum of positive squares in 4 ways, for example, as 45751696 + 43059844 = 6764^2 + 6562^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 88811540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88811549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7331 + ... + 15210.

It is an arithmetic number, because the mean of its divisors is an integer number (7810803).

Almost surely, 2^88811540 is an apocalyptic number.

It is an amenable number.

88811540 is an abundant number, since it is smaller than the sum of its proper divisors (98647732).

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

88811540 is a wasteful number, since it uses less digits than its factorization.

88811540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22747 (or 22745 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 88811540 is about 9423.9874787693. The cubic root of 88811540 is about 446.1591460848.

The spelling of 88811540 in words is "eighty-eight million, eight hundred eleven thousand, five hundred forty".