4005215140 has 24 divisors (see below), whose sum is σ = 8412583032. Its totient is φ = 1601775360.

The previous prime is 4005215131. The next prime is 4005215161. The reversal of 4005215140 is 415125004.

It can be written as a sum of positive squares in 4 ways, for example, as 471150436 + 3534064704 = 21706^2 + 59448^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106062 + ... + 138778.

It is an arithmetic number, because the mean of its divisors is an integer number (350524293).

Almost surely, 2^4005215140 is an apocalyptic number.

It is an amenable number.

4005215140 is an abundant number, since it is smaller than the sum of its proper divisors (4407367892).

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

4005215140 is a wasteful number, since it uses less digits than its factorization.

4005215140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38847 (or 38845 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 4005215140 is about 63286.7690753763. The cubic root of 4005215140 is about 1588.0906289285.

The spelling of 4005215140 in words is "four billion, five million, two hundred fifteen thousand, one hundred forty".