245321340 has 48 divisors (see below), whose sum is σ = 749347200. Its totient is φ = 59471680.

The previous prime is 245321333. The next prime is 245321347. The reversal of 245321340 is 43123542.

It is an interprime number because it is at equal distance from previous prime (245321333) and next prime (245321347).

It is a self number, because there is not a number n which added to its sum of digits gives 245321340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245321347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185190 + ... + 186509.

It is an arithmetic number, because the mean of its divisors is an integer number (15611400).

Almost surely, 2^245321340 is an apocalyptic number.

245321340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245321340 is an abundant number, since it is smaller than the sum of its proper divisors (504025860).

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

245321340 is a wasteful number, since it uses less digits than its factorization.

245321340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371722 (or 371720 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 245321340 is about 15662.7373086571. The cubic root of 245321340 is about 626.0059235865.

Adding to 245321340 its reverse (43123542), we get a palindrome (288444882).

The spelling of 245321340 in words is "two hundred forty-five million, three hundred twenty-one thousand, three hundred forty".