1290528426 has 16 divisors (see below), whose sum is σ = 2815698528. Its totient is φ = 391069200.

The previous prime is 1290528359. The next prime is 1290528433. The reversal of 1290528426 is 6248250921.

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, 9776665 + ... + 9776796.

It is an arithmetic number, because the mean of its divisors is an integer number (175981158).

Almost surely, 2^1290528426 is an apocalyptic number.

1290528426 is an abundant number, since it is smaller than the sum of its proper divisors (1525170102).

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

1290528426 is a wasteful number, since it uses less digits than its factorization.

1290528426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19553477.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1290528426 is about 35923.9255371681. The cubic root of 1290528426 is about 1088.7358534193.

The spelling of 1290528426 in words is "one billion, two hundred ninety million, five hundred twenty-eight thousand, four hundred twenty-six".