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28315962 = 2321573109
BaseRepresentation
bin110110000000…
…1000100111010
31222021121012100
41230001010322
524222102322
62450524230
7462452553
oct154010472
958247170
1028315962
1114a90224
129596676
135b3560c
143a9132a
152744dac
hex1b0113a

28315962 has 12 divisors (see below), whose sum is σ = 61351290. Its totient is φ = 9438648.

The previous prime is 28315957. The next prime is 28315979. The reversal of 28315962 is 26951382.

It can be written as a sum of positive squares in only one way, i.e., 16475481 + 11840481 = 4059^2 + 3441^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 786537 + ... + 786572.

Almost surely, 228315962 is an apocalyptic number.

28315962 is an abundant number, since it is smaller than the sum of its proper divisors (33035328).

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

28315962 is a wasteful number, since it uses less digits than its factorization.

28315962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573117 (or 1573114 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 28315962 is about 5321.2744714025. The cubic root of 28315962 is about 304.7968260773.

The spelling of 28315962 in words is "twenty-eight million, three hundred fifteen thousand, nine hundred sixty-two".

Divisors: 1 2 3 6 9 18 1573109 3146218 4719327 9438654 14157981 28315962