264497730 has 128 divisors (see below), whose sum is σ = 786475008. Its totient is φ = 55544832.

The previous prime is 264497729. The next prime is 264497759. The reversal of 264497730 is 37794462.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 152649 + ... + 154371.

It is an arithmetic number, because the mean of its divisors is an integer number (6144336).

Almost surely, 2^264497730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264497730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393237504).

264497730 is an abundant number, since it is smaller than the sum of its proper divisors (521977278).

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

264497730 is a wasteful number, since it uses less digits than its factorization.

264497730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800.

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 264497730 is about 16263.3861787759. The cubic root of 264497730 is about 641.9097659499.

The spelling of 264497730 in words is "two hundred sixty-four million, four hundred ninety-seven thousand, seven hundred thirty".