264500280 has 192 divisors, whose sum is σ = 993189600. Its totient is φ = 60334080.

The previous prime is 264500251. The next prime is 264500281. The reversal of 264500280 is 82005462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264500281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65356 + ... + 69284.

Almost surely, 2^264500280 is an apocalyptic number.

264500280 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 264500280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496594800).

264500280 is an abundant number, since it is smaller than the sum of its proper divisors (728689320).

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

264500280 is a wasteful number, since it uses less digits than its factorization.

264500280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974 (or 3967 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 264500280 is about 16263.4645755448. The cubic root of 264500280 is about 641.9118288090.

The spelling of 264500280 in words is "two hundred sixty-four million, five hundred thousand, two hundred eighty".