264402 has 24 divisors (see below), whose sum is σ = 589836. Its totient is φ = 85536.

The previous prime is 264391. The next prime is 264403. The reversal of 264402 is 204462.

264402 is a `hidden beast` number, since 264 + 402 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 239121 + 25281 = 489^2 + 159^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (264403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 468 + ... + 864.

2²⁶⁴⁴⁰² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294918).

264402 is an abundant number, since it is smaller than the sum of its proper divisors (325434).

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

264402 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 264402 = (442620)₉.

264402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 264402 is about 514.2003500582. The cubic root of 264402 is about 64.1832314199.

Adding to 264402 its reverse (204462), we get a palindrome (468864).

It can be divided in two parts, 264 and 402, that added together give a palindrome (666).

The spelling of 264402 in words is "two hundred sixty-four thousand, four hundred two".