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245465220 = 2235711136167
BaseRepresentation
bin11101010000110…
…00000010000100
3122002212220222110
432220120002010
51000314341340
640205101020
76040264020
oct1650300204
9562786873
10245465220
11116616720
126a257770
133bb155c0
1424859380
151683a680
hexea18084

245465220 has 384 divisors, whose sum is σ = 951939072. Its totient is φ = 45619200.

The previous prime is 245465197. The next prime is 245465239. The reversal of 245465220 is 22564542.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3663627 + ... + 3663693.

It is an arithmetic number, because the mean of its divisors is an integer number (2479008).

Almost surely, 2245465220 is an apocalyptic number.

245465220 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 245465220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (475969536).

245465220 is an abundant number, since it is smaller than the sum of its proper divisors (706473852).

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

245465220 is a wasteful number, since it uses less digits than its factorization.

245465220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 245465220 is about 15667.3297022818. The cubic root of 245465220 is about 626.1282830049.

The spelling of 245465220 in words is "two hundred forty-five million, four hundred sixty-five thousand, two hundred twenty".