1290480156 has 72 divisors (see below), whose sum is σ = 3742109280. Its totient is φ = 367318656.

The previous prime is 1290480151. The next prime is 1290480197. The reversal of 1290480156 is 6510840921.

1290480156 is a `hidden beast` number, since 1 + 29 + 0 + 480 + 156 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1290480156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290480151) 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, 58270 + ... + 77306.

It is an arithmetic number, because the mean of its divisors is an integer number (51973740).

Almost surely, 2^1290480156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1290480156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1871054640).

1290480156 is an abundant number, since it is smaller than the sum of its proper divisors (2451629124).

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

1290480156 is a wasteful number, since it uses less digits than its factorization.

1290480156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19323 (or 19318 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1290480156 is about 35923.2536945082. The cubic root of 1290480156 is about 1088.7222791516.

The spelling of 1290480156 in words is "one billion, two hundred ninety million, four hundred eighty thousand, one hundred fifty-six".