2455649280 has 528 divisors, whose sum is σ = 10177749504. Its totient is φ = 535265280.

The previous prime is 2455649219. The next prime is 2455649293. The reversal of 2455649280 is 829465542.

2455649280 is a `hidden beast` number, since 2 + 4 + 5 + 564 + 9 + 2 + 80 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7418715 + ... + 7419045.

Almost surely, 2^2455649280 is an apocalyptic number.

2455649280 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 2455649280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5088874752).

2455649280 is an abundant number, since it is smaller than the sum of its proper divisors (7722100224).

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

2455649280 is a wasteful number, since it uses less digits than its factorization.

2455649280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 2455649280 is about 49554.5081702967. The cubic root of 2455649280 is about 1349.1351168092.

The spelling of 2455649280 in words is "two billion, four hundred fifty-five million, six hundred forty-nine thousand, two hundred eighty".