88155540 has 288 divisors, whose sum is σ = 323616384. Its totient is φ = 19906560.

The previous prime is 88155539. The next prime is 88155541. The reversal of 88155540 is 4555188.

It is an interprime number because it is at equal distance from previous prime (88155539) and next prime (88155541).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 = 88155495 and 88155504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88155541) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 908772 + ... + 908868.

It is an arithmetic number, because the mean of its divisors is an integer number (1123668).

Almost surely, 2^88155540 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 88155540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161808192).

88155540 is an abundant number, since it is smaller than the sum of its proper divisors (235460844).

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

88155540 is a wasteful number, since it uses less digits than its factorization.

88155540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The square root of 88155540 is about 9389.1181694555. The cubic root of 88155540 is about 445.0579228562.

The spelling of 88155540 in words is "eighty-eight million, one hundred fifty-five thousand, five hundred forty".