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30002502120 = 2335250020851
BaseRepresentation
bin11011111100010010…
…011101100111101000
32212102221000000122020
4123330102131213220
5442421120031440
621441041424440
72111330026443
oct337422354750
985387000566
1030002502120
11117a66a29a8
12599393b120
132aa1a5cc46
1416488da65a
15ba8e703d0
hex6fc49d9e8

30002502120 has 32 divisors (see below), whose sum is σ = 90007506720. Its totient is φ = 8000667200.

The previous prime is 30002502109. The next prime is 30002502221. The reversal of 30002502120 is 2120520003.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30002502120.

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, 125010306 + ... + 125010545.

It is an arithmetic number, because the mean of its divisors is an integer number (2812734585).

Almost surely, 230002502120 is an apocalyptic number.

30002502120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30002502120 is an abundant number, since it is smaller than the sum of its proper divisors (60005004600).

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

30002502120 is a wasteful number, since it uses less digits than its factorization.

30002502120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250020865 (or 250020861 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The spelling of 30002502120 in words is "thirty billion, two million, five hundred two thousand, one hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 250020851 500041702 750062553 1000083404 1250104255 1500125106 2000166808 2500208510 3000250212 3750312765 5000417020 6000500424 7500625530 10000834040 15001251060 30002502120