2906839440 has 80 divisors (see below), whose sum is σ = 10012454400. Its totient is φ = 775156608.

The previous prime is 2906839433. The next prime is 2906839477. The reversal of 2906839440 is 449386092.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670720 + ... + 675039.

It is an arithmetic number, because the mean of its divisors is an integer number (125155680).

Almost surely, 2^2906839440 is an apocalyptic number.

2906839440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2906839440 is an abundant number, since it is smaller than the sum of its proper divisors (7105614960).

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

2906839440 is a wasteful number, since it uses less digits than its factorization.

2906839440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345781 (or 1345769 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 2906839440 is about 53915.1132800442. The cubic root of 2906839440 is about 1427.1633401378.

The spelling of 2906839440 in words is "two billion, nine hundred six million, eight hundred thirty-nine thousand, four hundred forty".