2548774440 has 96 divisors (see below), whose sum is σ = 8643697920. Its totient is φ = 650120064.

The previous prime is 2548774433. The next prime is 2548774447. The reversal of 2548774440 is 444778452.

It is an interprime number because it is at equal distance from previous prime (2548774433) and next prime (2548774447).

It is a super-2 number, since 2×2548774440² = 12992502291994627200, which contains 22 as substring.

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 not an unprimeable number, because it can be changed into a prime (2548774447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145632 + ... + 162191.

It is an arithmetic number, because the mean of its divisors is an integer number (90038520).

Almost surely, 2^2548774440 is an apocalyptic number.

2548774440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2548774440 is an abundant number, since it is smaller than the sum of its proper divisors (6094923480).

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

2548774440 is a wasteful number, since it uses less digits than its factorization.

2548774440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307863 (or 307856 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 45.

The square root of 2548774440 is about 50485.3883811940. The cubic root of 2548774440 is about 1365.9783028236.

The spelling of 2548774440 in words is "two billion, five hundred forty-eight million, seven hundred seventy-four thousand, four hundred forty".