4001287626 has 32 divisors (see below), whose sum is σ = 10162001280. Its totient is φ = 1143224928.

The previous prime is 4001287601. The next prime is 4001287663. The reversal of 4001287626 is 6267821004.

4001287626 is a `hidden beast` number, since 4 + 0 + 0 + 1 + 28 + 7 + 626 = 666.

It is a Curzon number.

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, 5292331 + ... + 5293086.

It is an arithmetic number, because the mean of its divisors is an integer number (317562540).

Almost surely, 2^4001287626 is an apocalyptic number.

4001287626 is an abundant number, since it is smaller than the sum of its proper divisors (6160713654).

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

4001287626 is a wasteful number, since it uses less digits than its factorization.

4001287626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10585435 (or 10585429 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 4001287626 is about 63255.7319616175. The cubic root of 4001287626 is about 1587.5713652668.

The spelling of 4001287626 in words is "four billion, one million, two hundred eighty-seven thousand, six hundred twenty-six".