1274489628 has 24 divisors (see below), whose sum is σ = 2995519632. Its totient is φ = 421728384.

The previous prime is 1274489627. The next prime is 1274489641. The reversal of 1274489628 is 8269844721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1274489627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385975 + ... + 389262.

It is an arithmetic number, because the mean of its divisors is an integer number (124813318).

Almost surely, 2^1274489628 is an apocalyptic number.

It is an amenable number.

1274489628 is an abundant number, since it is smaller than the sum of its proper divisors (1721030004).

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

1274489628 is a wasteful number, since it uses less digits than its factorization.

1274489628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775381 (or 775379 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The square root of 1274489628 is about 35699.9947899156. The cubic root of 1274489628 is about 1084.2067376645.

The spelling of 1274489628 in words is "one billion, two hundred seventy-four million, four hundred eighty-nine thousand, six hundred twenty-eight".