71835240 has 64 divisors (see below), whose sum is σ = 217676160. Its totient is φ = 18963200.

The previous prime is 71835229. The next prime is 71835259. The reversal of 71835240 is 4253817.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 71835198 and 71835207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9157 + ... + 15083.

It is an arithmetic number, because the mean of its divisors is an integer number (3401190).

Almost surely, 2^71835240 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 71835240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108838080).

71835240 is an abundant number, since it is smaller than the sum of its proper divisors (145840920).

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

71835240 is a wasteful number, since it uses less digits than its factorization.

71835240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6042 (or 6038 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 71835240 is about 8475.5672376544. The cubic root of 71835240 is about 415.6991939080.

The spelling of 71835240 in words is "seventy-one million, eight hundred thirty-five thousand, two hundred forty".