2740408398 has 216 divisors, whose sum is σ = 7911087912. Its totient is φ = 679408128.

The previous prime is 2740408379. The next prime is 2740408409. The reversal of 2740408398 is 8938040472.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 3313261 + ... + 3314087.

It is an arithmetic number, because the mean of its divisors is an integer number (36625407).

Almost surely, 2^2740408398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2740408398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3955543956).

2740408398 is an abundant number, since it is smaller than the sum of its proper divisors (5170679514).

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

2740408398 is a wasteful number, since it uses less digits than its factorization.

2740408398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 2740408398 is about 52348.9101892293. The cubic root of 2740408398 is about 1399.3889166415.

The spelling of 2740408398 in words is "two billion, seven hundred forty million, four hundred eight thousand, three hundred ninety-eight".