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315202980 = 22355253383
BaseRepresentation
bin10010110010011…
…001110110100100
3210222002222012110
4102302121312210
51121142443410
651135521020
710545116061
oct2262316644
9728088173
10315202980
11151a18734
1289689170
13503c1951
142dc0dc68
151ca13720
hex12c99da4

315202980 has 24 divisors (see below), whose sum is σ = 882568512. Its totient is φ = 84054112.

The previous prime is 315202949. The next prime is 315202997. The reversal of 315202980 is 89202513.

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 7 ways as a sum of consecutive naturals, for example, 2626632 + ... + 2626751.

It is an arithmetic number, because the mean of its divisors is an integer number (36773688).

Almost surely, 2315202980 is an apocalyptic number.

315202980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

315202980 is an abundant number, since it is smaller than the sum of its proper divisors (567365532).

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

315202980 is a wasteful number, since it uses less digits than its factorization.

315202980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5253395 (or 5253393 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 315202980 is about 17753.9567420899. The cubic root of 315202980 is about 680.5553277936. Note that the first 3 decimals are identical.

The spelling of 315202980 in words is "three hundred fifteen million, two hundred two thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 5253383 10506766 15760149 21013532 26266915 31520298 52533830 63040596 78800745 105067660 157601490 315202980