88615840 has 24 divisors (see below), whose sum is σ = 209355300. Its totient is φ = 35446272.

The previous prime is 88615837. The next prime is 88615853. The reversal of 88615840 is 4851688.

It can be written as a sum of positive squares in 2 ways, for example, as 87834384 + 781456 = 9372^2 + 884^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 88615793 and 88615802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276765 + ... + 277084.

Almost surely, 2^88615840 is an apocalyptic number.

88615840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

88615840 is an abundant number, since it is smaller than the sum of its proper divisors (120739460).

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

88615840 is a wasteful number, since it uses less digits than its factorization.

88615840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553864 (or 553856 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 88615840 is about 9413.5986742584. The cubic root of 88615840 is about 445.8311948733.

The spelling of 88615840 in words is "eighty-eight million, six hundred fifteen thousand, eight hundred forty".