2794544640 has 120 divisors (see below), whose sum is σ = 9678373848. Its totient is φ = 745205760.

The previous prime is 2794544633. The next prime is 2794544647. The reversal of 2794544640 is 464454972.

It is an interprime number because it is at equal distance from previous prime (2794544633) and next prime (2794544647).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2794544647) 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, 37606 + ... + 83685.

Almost surely, 2^2794544640 is an apocalyptic number.

2794544640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2794544640 is an abundant number, since it is smaller than the sum of its proper divisors (6883829208).

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

2794544640 is a wasteful number, since it uses less digits than its factorization.

2794544640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121320 (or 121301 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The square root of 2794544640 is about 52863.4527816714. The cubic root of 2794544640 is about 1408.5437810072.

The spelling of 2794544640 in words is "two billion, seven hundred ninety-four million, five hundred forty-four thousand, six hundred forty".