245432240 has 20 divisors (see below), whose sum is σ = 570630144. Its totient is φ = 98172864.

The previous prime is 245432233. The next prime is 245432263. The reversal of 245432240 is 42234542.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533872 + ... + 1534031.

Almost surely, 2^245432240 is an apocalyptic number.

245432240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245432240 is an abundant number, since it is smaller than the sum of its proper divisors (325197904).

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

245432240 is a wasteful number, since it uses less digits than its factorization.

245432240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3067916 (or 3067910 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 245432240 is about 15666.2771582785. The cubic root of 245432240 is about 626.1002401514.

Adding to 245432240 its reverse (42234542), we get a palindrome (287666782).

The spelling of 245432240 in words is "two hundred forty-five million, four hundred thirty-two thousand, two hundred forty".