245351220 has 48 divisors (see below), whose sum is σ = 693802368. Its totient is φ = 64777600.

The previous prime is 245351219. The next prime is 245351243. The reversal of 245351220 is 22153542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14184 + ... + 26303.

It is an arithmetic number, because the mean of its divisors is an integer number (14454216).

Almost surely, 2^245351220 is an apocalyptic number.

245351220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245351220 is an abundant number, since it is smaller than the sum of its proper divisors (448451148).

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

245351220 is a wasteful number, since it uses less digits than its factorization.

245351220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40600 (or 40598 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 245351220 is about 15663.6911358722. The cubic root of 245351220 is about 626.0313382767.

The spelling of 245351220 in words is "two hundred forty-five million, three hundred fifty-one thousand, two hundred twenty".