2540436480 has 704 divisors, whose sum is σ = 10187182080. Its totient is φ = 596901888.

The previous prime is 2540436473. The next prime is 2540436487. The reversal of 2540436480 is 846340452.

2540436480 is a `hidden beast` number, since 2 + 5 + 4 + 0 + 4 + 3 + 648 + 0 = 666.

2540436480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2540436473) and next prime (2540436487).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540436487) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54051817 + ... + 54051863.

Almost surely, 2^2540436480 is an apocalyptic number.

2540436480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2540436480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5093591040).

2540436480 is an abundant number, since it is smaller than the sum of its proper divisors (7646745600).

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

2540436480 is a wasteful number, since it uses less digits than its factorization.

2540436480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The square root of 2540436480 is about 50402.7427825114. The cubic root of 2540436480 is about 1364.4871397792.

The spelling of 2540436480 in words is "two billion, five hundred forty million, four hundred thirty-six thousand, four hundred eighty".