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1030199980 = 22551509999
BaseRepresentation
bin111101011001111…
…001101010101100
32122210111120200211
4331121321222230
54102212344410
6250120432204
734346361325
oct7531715254
92583446624
101030199980
11489580547
12249018664
131355821b4
149ab6d44c
156069968a
hex3d679aac

1030199980 has 12 divisors (see below), whose sum is σ = 2163420000. Its totient is φ = 412079984.

The previous prime is 1030199939. The next prime is 1030199987. The reversal of 1030199980 is 899910301.

It is a super-2 number, since 2×10301999802 = 2122623997584000800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1030199987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25754980 + ... + 25755019.

It is an arithmetic number, because the mean of its divisors is an integer number (180285000).

Almost surely, 21030199980 is an apocalyptic number.

1030199980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1030199980 is an abundant number, since it is smaller than the sum of its proper divisors (1133220020).

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

1030199980 is a wasteful number, since it uses less digits than its factorization.

1030199980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51510008 (or 51510006 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 1030199980 is about 32096.7284937266. The cubic root of 1030199980 is about 1009.9669890854.

The spelling of 1030199980 in words is "one billion, thirty million, one hundred ninety-nine thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 51509999 103019998 206039996 257549995 515099990 1030199980