269485640 has 16 divisors (see below), whose sum is σ = 606342780. Its totient is φ = 107794240.

The previous prime is 269485637. The next prime is 269485673. The reversal of 269485640 is 46584962.

It can be written as a sum of positive squares in 2 ways, for example, as 265233796 + 4251844 = 16286^2 + 2062^2 .

It is a junction number, because it is equal to n+sod(n) for n = 269485591 and 269485600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3368531 + ... + 3368610.

Almost surely, 2^269485640 is an apocalyptic number.

269485640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

269485640 is an abundant number, since it is smaller than the sum of its proper divisors (336857140).

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

269485640 is a wasteful number, since it uses less digits than its factorization.

269485640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6737152 (or 6737148 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 269485640 is about 16416.0177875147. The cubic root of 269485640 is about 645.9197183188.

The spelling of 269485640 in words is "two hundred sixty-nine million, four hundred eighty-five thousand, six hundred forty".