1287414180 has 72 divisors (see below), whose sum is σ = 4205560632. Its totient is φ = 316901376.

The previous prime is 1287414173. The next prime is 1287414181. The reversal of 1287414180 is 814147821.

It can be written as a sum of positive squares in 4 ways, for example, as 3481956 + 1283932224 = 1866^2 + 35832^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1287414181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 272749 + ... + 277428.

Almost surely, 2^1287414180 is an apocalyptic number.

1287414180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1287414180 is an abundant number, since it is smaller than the sum of its proper divisors (2918146452).

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

1287414180 is a wasteful number, since it uses less digits than its factorization.

1287414180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550205 (or 550200 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 1287414180 is about 35880.5543435438. The cubic root of 1287414180 is about 1087.8593849867.

The spelling of 1287414180 in words is "one billion, two hundred eighty-seven million, four hundred fourteen thousand, one hundred eighty".