245183220 has 192 divisors, whose sum is σ = 838656000. Its totient is φ = 59190912.

The previous prime is 245183209. The next prime is 245183233. The reversal of 245183220 is 22381542.

It is a super-2 number, since 2×245183220² = 120229622739136800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 235461 + ... + 236499.

It is an arithmetic number, because the mean of its divisors is an integer number (4368000).

Almost surely, 2^245183220 is an apocalyptic number.

245183220 is a gapful number since it is divisible by the number (20) 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 245183220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (419328000).

245183220 is an abundant number, since it is smaller than the sum of its proper divisors (593472780).

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

245183220 is a wasteful number, since it uses less digits than its factorization.

245183220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099 (or 1091 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 245183220 is about 15658.3274968944. The cubic root of 245183220 is about 625.8884176109. Note that the first 3 decimals are identical.

The spelling of 245183220 in words is "two hundred forty-five million, one hundred eighty-three thousand, two hundred twenty".