245304040 has 32 divisors (see below), whose sum is σ = 570969000. Its totient is φ = 94737664.

The previous prime is 245304029. The next prime is 245304061. The reversal of 245304040 is 40403542.

245304040 = 1228² + 1229² + ... + 1372².

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 204318436 + 40985604 = 14294^2 + 6402^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104575 + ... + 106894.

Almost surely, 2^245304040 is an apocalyptic number.

245304040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245304040 is an abundant number, since it is smaller than the sum of its proper divisors (325664960).

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

245304040 is a wasteful number, since it uses less digits than its factorization.

245304040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211509 (or 211505 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 245304040 is about 15662.1850327469. The cubic root of 245304040 is about 625.9912079798.

Adding to 245304040 its reverse (40403542), we get a palindrome (285707582).

The spelling of 245304040 in words is "two hundred forty-five million, three hundred four thousand, forty".