2051428540 has 24 divisors (see below), whose sum is σ = 4923428832. Its totient is φ = 703346880.

The previous prime is 2051428529. The next prime is 2051428541. The reversal of 2051428540 is 458241502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051428541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7326391 + ... + 7326670.

It is an arithmetic number, because the mean of its divisors is an integer number (205142868).

Almost surely, 2^2051428540 is an apocalyptic number.

2051428540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051428540 is an abundant number, since it is smaller than the sum of its proper divisors (2872000292).

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

2051428540 is a wasteful number, since it uses less digits than its factorization.

2051428540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14653077 (or 14653075 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

The square root of 2051428540 is about 45292.6985285708. The cubic root of 2051428540 is about 1270.6291011788.

The spelling of 2051428540 in words is "two billion, fifty-one million, four hundred twenty-eight thousand, five hundred forty".