1265388 has 12 divisors (see below), whose sum is σ = 2952600. Its totient is φ = 421792.

The previous prime is 1265387. The next prime is 1265393. The reversal of 1265388 is 8835621.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1265387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52713 + ... + 52736.

It is an arithmetic number, because the mean of its divisors is an integer number (246050).

2^1265388 is an apocalyptic number.

It is an amenable number.

1265388 is an abundant number, since it is smaller than the sum of its proper divisors (1687212).

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

1265388 is a wasteful number, since it uses less digits than its factorization.

1265388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105456 (or 105454 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 1265388 is about 1124.8946617350. The cubic root of 1265388 is about 108.1619654869.

It can be divided in two parts, 1265 and 388, that added together give a triangular number (1653 = T₅₇).

The spelling of 1265388 in words is "one million, two hundred sixty-five thousand, three hundred eighty-eight".