1290289272 has 32 divisors (see below), whose sum is σ = 3226608000. Its totient is φ = 429978464.

The previous prime is 1290289267. The next prime is 1290289289. The reversal of 1290289272 is 2729820921.

It is a congruent number.

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, 154303 + ... + 162449.

It is an arithmetic number, because the mean of its divisors is an integer number (100831500).

Almost surely, 2^1290289272 is an apocalyptic number.

1290289272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1290289272 is an abundant number, since it is smaller than the sum of its proper divisors (1936318728).

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

1290289272 is a wasteful number, since it uses less digits than its factorization.

1290289272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14755 (or 14751 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 1290289272 is about 35920.5967656441. The cubic root of 1290289272 is about 1088.6685963138.

The spelling of 1290289272 in words is "one billion, two hundred ninety million, two hundred eighty-nine thousand, two hundred seventy-two".