263250840 has 32 divisors (see below), whose sum is σ = 789752880. Its totient is φ = 70200192.

The previous prime is 263250817. The next prime is 263250863. The reversal of 263250840 is 48052362.

It is an interprime number because it is at equal distance from previous prime (263250817) and next prime (263250863).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 263250798 and 263250807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1096759 + ... + 1096998.

Almost surely, 2^263250840 is an apocalyptic number.

263250840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263250840 is an abundant number, since it is smaller than the sum of its proper divisors (526502040).

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

263250840 is a wasteful number, since it uses less digits than its factorization.

263250840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193771 (or 2193767 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 263250840 is about 16225.0066255765. The cubic root of 263250840 is about 640.8994839317.

The spelling of 263250840 in words is "two hundred sixty-three million, two hundred fifty thousand, eight hundred forty".