264386740 has 12 divisors (see below), whose sum is σ = 555212196. Its totient is φ = 105754688.

The previous prime is 264386713. The next prime is 264386743. The reversal of 264386740 is 47683462.

It is a happy number.

264386740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 142372624 + 122014116 = 11932^2 + 11046^2 .

It is a junction number, because it is equal to n+sod(n) for n = 264386693 and 264386702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264386743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6609649 + ... + 6609688.

It is an arithmetic number, because the mean of its divisors is an integer number (46267683).

Almost surely, 2^264386740 is an apocalyptic number.

264386740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264386740 is an abundant number, since it is smaller than the sum of its proper divisors (290825456).

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

264386740 is a wasteful number, since it uses less digits than its factorization.

264386740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13219346 (or 13219344 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 264386740 is about 16259.9735547140. The cubic root of 264386740 is about 641.8199661461.

The spelling of 264386740 in words is "two hundred sixty-four million, three hundred eighty-six thousand, seven hundred forty".