2012557140 has 288 divisors, whose sum is σ = 7133293440. Its totient is φ = 454118400.

The previous prime is 2012557117. The next prime is 2012557171. The reversal of 2012557140 is 417552102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2294382 + ... + 2295258.

It is an arithmetic number, because the mean of its divisors is an integer number (24768380).

Almost surely, 2^2012557140 is an apocalyptic number.

2012557140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2012557140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3566646720).

2012557140 is an abundant number, since it is smaller than the sum of its proper divisors (5120736300).

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

2012557140 is a wasteful number, since it uses less digits than its factorization.

2012557140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 2012557140 is about 44861.5329653368. The cubic root of 2012557140 is about 1262.5523847166.

The spelling of 2012557140 in words is "two billion, twelve million, five hundred fifty-seven thousand, one hundred forty".