245221464 has 128 divisors (see below), whose sum is σ = 674956800. Its totient is φ = 73943040.

The previous prime is 245221453. The next prime is 245221489. The reversal of 245221464 is 464122542.

245221464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1468309 + ... + 1468475.

It is an arithmetic number, because the mean of its divisors is an integer number (5273100).

Almost surely, 2^245221464 is an apocalyptic number.

245221464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245221464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337478400).

245221464 is an abundant number, since it is smaller than the sum of its proper divisors (429735336).

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

245221464 is a wasteful number, since it uses less digits than its factorization.

245221464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 309 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 245221464 is about 15659.5486524995. The cubic root of 245221464 is about 625.9209582176.

The spelling of 245221464 in words is "two hundred forty-five million, two hundred twenty-one thousand, four hundred sixty-four".