2878969140 has 36 divisors (see below), whose sum is σ = 8732873604. Its totient is φ = 767725056.

The previous prime is 2878969123. The next prime is 2878969141. The reversal of 2878969140 is 419698782.

2878969140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1126542096 + 1752427044 = 33564^2 + 41862^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878969141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7996957 + ... + 7997316.

Almost surely, 2^2878969140 is an apocalyptic number.

2878969140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2878969140 is an abundant number, since it is smaller than the sum of its proper divisors (5853904464).

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

2878969140 is a wasteful number, since it uses less digits than its factorization.

2878969140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15994288 (or 15994283 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 2878969140 is about 53656.0261294107. The cubic root of 2878969140 is about 1422.5875488054.

The spelling of 2878969140 in words is "two billion, eight hundred seventy-eight million, nine hundred sixty-nine thousand, one hundred forty".