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20370506874 = 234378955453
BaseRepresentation
bin10010111110001011…
…010100010001111010
31221120122200222010120
4102332023110101322
5313204322204444
613205202354110
71320541310604
oct227613242172
957518628116
1020370506874
118703690353
123b4605b936
131bc8390b83
14db35b0174
157e3555b19
hex4be2d447a

20370506874 has 16 divisors (see below), whose sum is σ = 41688479712. Its totient is φ = 6632257968.

The previous prime is 20370506809. The next prime is 20370506903. The reversal of 20370506874 is 47860507302.

It is a Curzon 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, 39477469 + ... + 39477984.

It is an arithmetic number, because the mean of its divisors is an integer number (2605529982).

Almost surely, 220370506874 is an apocalyptic number.

20370506874 is an abundant number, since it is smaller than the sum of its proper divisors (21317972838).

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

20370506874 is a wasteful number, since it uses less digits than its factorization.

20370506874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78955501.

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 20370506874 in words is "twenty billion, three hundred seventy million, five hundred six thousand, eight hundred seventy-four".

Divisors: 1 2 3 6 43 86 129 258 78955453 157910906 236866359 473732718 3395084479 6790168958 10185253437 20370506874