2907638340 has 48 divisors (see below), whose sum is σ = 8361431232. Its totient is φ = 754413696.

The previous prime is 2907638323. The next prime is 2907638347. The reversal of 2907638340 is 438367092.

It is a super-3 number, since 3×2907638340³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2907638292 and 2907638301.

It is not an unprimeable number, because it can be changed into a prime (2907638347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 652654 + ... + 657093.

It is an arithmetic number, because the mean of its divisors is an integer number (174196484).

Almost surely, 2^2907638340 is an apocalyptic number.

2907638340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2907638340 is an abundant number, since it is smaller than the sum of its proper divisors (5453792892).

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

2907638340 is a wasteful number, since it uses less digits than its factorization.

2907638340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309796 (or 1309794 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 2907638340 is about 53922.5216398492. The cubic root of 2907638340 is about 1427.2940727749.

The spelling of 2907638340 in words is "two billion, nine hundred seven million, six hundred thirty-eight thousand, three hundred forty".