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228070864 = 2474149667
BaseRepresentation
bin11011001100000…
…01010111010000
3120220011012102001
431212001113100
5431341231424
634344203344
75436366430
oct1546012720
9526135361
10228070864
1110781601a
1264469554
1338335198
142240c2c0
1515051844
hexd9815d0

228070864 has 40 divisors (see below), whose sum is σ = 517341888. Its totient is φ = 95358720.

The previous prime is 228070859. The next prime is 228070879. The reversal of 228070864 is 468070822.

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, 20242 + ... + 29425.

Almost surely, 2228070864 is an apocalyptic number.

It is an amenable number.

228070864 is an abundant number, since it is smaller than the sum of its proper divisors (289271024).

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

228070864 is a wasteful number, since it uses less digits than its factorization.

228070864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49723 (or 49717 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 228070864 is about 15102.0152297632. The cubic root of 228070864 is about 610.9747597307.

The spelling of 228070864 in words is "two hundred twenty-eight million, seventy thousand, eight hundred sixty-four".

Divisors: 1 2 4 7 8 14 16 28 41 56 82 112 164 287 328 574 656 1148 2296 4592 49667 99334 198668 347669 397336 695338 794672 1390676 2036347 2781352 4072694 5562704 8145388 14254429 16290776 28508858 32581552 57017716 114035432 228070864