263894780 has 24 divisors (see below), whose sum is σ = 573289920. Its totient is φ = 101917760.

The previous prime is 263894773. The next prime is 263894783. The reversal of 263894780 is 87498362.

It is a super-2 number, since 2×263894780² = 139280909822496800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263894783) 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, 226916 + ... + 228075.

It is an arithmetic number, because the mean of its divisors is an integer number (23887080).

Almost surely, 2^263894780 is an apocalyptic number.

263894780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263894780 is an abundant number, since it is smaller than the sum of its proper divisors (309395140).

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

263894780 is a wasteful number, since it uses less digits than its factorization.

263894780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455029 (or 455027 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 263894780 is about 16244.8385649104. The cubic root of 263894780 is about 641.4216282189.

The spelling of 263894780 in words is "two hundred sixty-three million, eight hundred ninety-four thousand, seven hundred eighty".