263454720 has 152 divisors (see below), whose sum is σ = 855636384. Its totient is φ = 69206016.

The previous prime is 263454713. The next prime is 263454721. The reversal of 263454720 is 27454362.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263454721) 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, 3932127 + ... + 3932193.

Almost surely, 2^263454720 is an apocalyptic number.

263454720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263454720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427818192).

263454720 is an abundant number, since it is smaller than the sum of its proper divisors (592181664).

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

263454720 is an frugal number, since it uses more digits than its factorization.

263454720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 263454720 is about 16231.2883037669. The cubic root of 263454720 is about 641.0648938108.

The spelling of 263454720 in words is "two hundred sixty-three million, four hundred fifty-four thousand, seven hundred twenty".