1265072628 has 12 divisors (see below), whose sum is σ = 2951836160. Its totient is φ = 421690872.

The previous prime is 1265072623. The next prime is 1265072681. The reversal of 1265072628 is 8262705621.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1265072628² = 3200817508229652768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265072621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52711348 + ... + 52711371.

Almost surely, 2^1265072628 is an apocalyptic number.

It is an amenable number.

1265072628 is an abundant number, since it is smaller than the sum of its proper divisors (1686763532).

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

1265072628 is a wasteful number, since it uses less digits than its factorization.

1265072628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105422726 (or 105422724 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 1265072628 is about 35567.8594801543. The cubic root of 1265072628 is about 1081.5297902330.

The spelling of 1265072628 in words is "one billion, two hundred sixty-five million, seventy-two thousand, six hundred twenty-eight".