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28620410480 = 245389919679
BaseRepresentation
bin11010101001111010…
…001100111001110000
32201212121100111022222
4122221322030321300
5432103311113410
621051550420212
72032145321654
oct325172147160
981777314288
1028620410480
1111157526002
125668b01668
13291161183c
14155712aa64
15b27966955
hex6a9e8ce70

28620410480 has 40 divisors (see below), whose sum is σ = 66713587200. Its totient is φ = 11418722048.

The previous prime is 28620410453. The next prime is 28620410573. The reversal of 28620410480 is 8401402682.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 28620410480.

It is a congruent number.

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, 428720 + ... + 490959.

It is an arithmetic number, because the mean of its divisors is an integer number (1667839680).

Almost surely, 228620410480 is an apocalyptic number.

28620410480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28620410480 is an abundant number, since it is smaller than the sum of its proper divisors (38093176720).

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

28620410480 is a wasteful number, since it uses less digits than its factorization.

28620410480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920081 (or 920075 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The spelling of 28620410480 in words is "twenty-eight billion, six hundred twenty million, four hundred ten thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 389 778 1556 1945 3112 3890 6224 7780 15560 31120 919679 1839358 3678716 4598395 7357432 9196790 14714864 18393580 36787160 73574320 357755131 715510262 1431020524 1788775655 2862041048 3577551310 5724082096 7155102620 14310205240 28620410480