263159040 has 72 divisors (see below), whose sum is σ = 840476448. Its totient is φ = 70174720.

The previous prime is 263159009. The next prime is 263159041. The reversal of 263159040 is 40951362.

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 = 263158989 and 263159007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263159041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30426 + ... + 38105.

It is an arithmetic number, because the mean of its divisors is an integer number (11673284).

Almost surely, 2^263159040 is an apocalyptic number.

263159040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263159040 is an abundant number, since it is smaller than the sum of its proper divisors (577317408).

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

263159040 is an equidigital number, since it uses as much as digits as its factorization.

263159040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68555 (or 68541 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 263159040 is about 16222.1774124191. The cubic root of 263159040 is about 640.8249777904.

The spelling of 263159040 in words is "two hundred sixty-three million, one hundred fifty-nine thousand, forty".