1277700480 has 480 divisors, whose sum is σ = 5318414640. Its totient is φ = 291465216.

The previous prime is 1277700461. The next prime is 1277700481. The reversal of 1277700480 is 840077721.

It is a tau number, because it is divible by the number of its divisors (480).

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 (1277700481) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2539909 + ... + 2540411.

Almost surely, 2^1277700480 is an apocalyptic number.

1277700480 is a gapful number since it is divisible by the number (10) 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 1277700480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2659207320).

1277700480 is an abundant number, since it is smaller than the sum of its proper divisors (4040714160).

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

1277700480 is an equidigital number, since it uses as much as digits as its factorization.

1277700480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 1277700480 is about 35744.9364246182. The cubic root of 1277700480 is about 1085.1164633916.

The spelling of 1277700480 in words is "one billion, two hundred seventy-seven million, seven hundred thousand, four hundred eighty".