2005247156 has 96 divisors (see below), whose sum is σ = 4145541120. Its totient is φ = 839030400.

The previous prime is 2005247149. The next prime is 2005247159. The reversal of 2005247156 is 6517425002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005247159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7399301 + ... + 7399571.

It is an arithmetic number, because the mean of its divisors is an integer number (43182720).

Almost surely, 2^2005247156 is an apocalyptic number.

It is an amenable number.

2005247156 is an abundant number, since it is smaller than the sum of its proper divisors (2140293964).

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

2005247156 is a wasteful number, since it uses less digits than its factorization.

2005247156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 2005247156 is about 44779.9861098683. The cubic root of 2005247156 is about 1261.0219214307.

The spelling of 2005247156 in words is "two billion, five million, two hundred forty-seven thousand, one hundred fifty-six".