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28055153630 = 257400787909
BaseRepresentation
bin11010001000001101…
…111010101111011110
32200102012201110201002
4122020031322233132
5424424104404010
620515515150302
72012142604550
oct321015725736
980365643632
1028055153630
1110997448189
12552b745392
13285148bb2a
1415020294d0
15ae300d1a5
hex68837abde

28055153630 has 16 divisors (see below), whose sum is σ = 57713459040. Its totient is φ = 9618909792.

The previous prime is 28055153603. The next prime is 28055153657. The reversal of 28055153630 is 3635155082.

It is an interprime number because it is at equal distance from previous prime (28055153603) and next prime (28055153657).

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, 200393885 + ... + 200394024.

It is an arithmetic number, because the mean of its divisors is an integer number (3607091190).

Almost surely, 228055153630 is an apocalyptic number.

28055153630 is an abundant number, since it is smaller than the sum of its proper divisors (29658305410).

28055153630 is a wasteful number, since it uses less digits than its factorization.

28055153630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400787923.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 28055153630 in words is "twenty-eight billion, fifty-five million, one hundred fifty-three thousand, six hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 400787909 801575818 2003939545 2805515363 4007879090 5611030726 14027576815 28055153630