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245679020 = 22512283951
BaseRepresentation
bin11101010010011…
…00001110101100
3122010021210020222
432221030032230
51000343212040
640213430512
76042144236
oct1651141654
9563253228
10245679020
11116752314
126a33b438
133bb8ba02
14248b3256
151687dbb5
hexea4c3ac

245679020 has 12 divisors (see below), whose sum is σ = 515925984. Its totient is φ = 98271600.

The previous prime is 245678977. The next prime is 245679023. The reversal of 245679020 is 20976542.

245679020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (245679023) 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, 6141956 + ... + 6141995.

It is an arithmetic number, because the mean of its divisors is an integer number (42993832).

Almost surely, 2245679020 is an apocalyptic number.

245679020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245679020 is an abundant number, since it is smaller than the sum of its proper divisors (270246964).

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

245679020 is a wasteful number, since it uses less digits than its factorization.

245679020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12283960 (or 12283958 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 245679020 is about 15674.1513326878. The cubic root of 245679020 is about 626.3100159879.

The spelling of 245679020 in words is "two hundred forty-five million, six hundred seventy-nine thousand, twenty".

Divisors: 1 2 4 5 10 20 12283951 24567902 49135804 61419755 122839510 245679020