245284440 has 32 divisors (see below), whose sum is σ = 735853680. Its totient is φ = 65409152.

The previous prime is 245284421. The next prime is 245284441. The reversal of 245284440 is 44482542.

It is a super-2 number, since 2×245284440² = 120328913012227200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245284441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1021899 + ... + 1022138.

Almost surely, 2^245284440 is an apocalyptic number.

245284440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245284440 is an abundant number, since it is smaller than the sum of its proper divisors (490569240).

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

245284440 is a wasteful number, since it uses less digits than its factorization.

245284440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044051 (or 2044047 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 33.

The square root of 245284440 is about 15661.5593093408. The cubic root of 245284440 is about 625.9745351269.

The spelling of 245284440 in words is "two hundred forty-five million, two hundred eighty-four thousand, four hundred forty".