88236540 has 240 divisors, whose sum is σ = 327849984. Its totient is φ = 19440000.

The previous prime is 88236523. The next prime is 88236541. The reversal of 88236540 is 4563288.

88236540 is a `hidden beast` number, since 8 + 82 + 36 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 88236495 and 88236504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88236541) 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 79 ways as a sum of consecutive naturals, for example, 351415 + ... + 351665.

Almost surely, 2^88236540 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 88236540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163924992).

88236540 is an abundant number, since it is smaller than the sum of its proper divisors (239613444).

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

88236540 is a wasteful number, since it uses less digits than its factorization.

88236540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 88236540 is about 9393.4306831956. The cubic root of 88236540 is about 445.1941920617.

The spelling of 88236540 in words is "eighty-eight million, two hundred thirty-six thousand, five hundred forty".