1267390260 has 96 divisors (see below), whose sum is σ = 3987446400. Its totient is φ = 334160640.

The previous prime is 1267390207. The next prime is 1267390337. The reversal of 1267390260 is 620937621.

1267390260 is a `hidden beast` number, since 1 + 2 + 6 + 7 + 390 + 260 = 666.

1267390260 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1267390260² = 3212556142285735200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34875 + ... + 61245.

It is an arithmetic number, because the mean of its divisors is an integer number (41535900).

Almost surely, 2^1267390260 is an apocalyptic number.

1267390260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1267390260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1993723200).

1267390260 is an abundant number, since it is smaller than the sum of its proper divisors (2720056140).

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

1267390260 is a wasteful number, since it uses less digits than its factorization.

1267390260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26478 (or 26470 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 1267390260 is about 35600.4249974632. The cubic root of 1267390260 is about 1082.1898469099.

The spelling of 1267390260 in words is "one billion, two hundred sixty-seven million, three hundred ninety thousand, two hundred sixty".