1287672474 has 16 divisors (see below), whose sum is σ = 2809467360. Its totient is φ = 390203760.

The previous prime is 1287672467. The next prime is 1287672499. The reversal of 1287672474 is 4742767821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9755029 + ... + 9755160.

It is an arithmetic number, because the mean of its divisors is an integer number (175591710).

Almost surely, 2^1287672474 is an apocalyptic number.

1287672474 is an abundant number, since it is smaller than the sum of its proper divisors (1521794886).

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

1287672474 is a wasteful number, since it uses less digits than its factorization.

1287672474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19510205.

The product of its digits is 1053696, while the sum is 48.

The square root of 1287672474 is about 35884.1535221329. The cubic root of 1287672474 is about 1087.9321325575.

The spelling of 1287672474 in words is "one billion, two hundred eighty-seven million, six hundred seventy-two thousand, four hundred seventy-four".