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28514952 = 2332396041
BaseRepresentation
bin110110011000…
…1101010001000
31222122201011100
41230301222020
524244434302
62455101400
7464241654
oct154615210
958581140
1028514952
1115106784
129671860
135ba506b
143b03a64
152783d1c
hex1b31a88

28514952 has 24 divisors (see below), whose sum is σ = 77228190. Its totient is φ = 9504960.

The previous prime is 28514951. The next prime is 28514957. The reversal of 28514952 is 25941582.

It can be written as a sum of positive squares in only one way, i.e., 15163236 + 13351716 = 3894^2 + 3654^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28514951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197949 + ... + 198092.

Almost surely, 228514952 is an apocalyptic number.

It is an amenable number.

28514952 is an abundant number, since it is smaller than the sum of its proper divisors (48713238).

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

28514952 is a wasteful number, since it uses less digits than its factorization.

28514952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396053 (or 396046 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 28514952 is about 5339.9393254980. The cubic root of 28514952 is about 305.5091451176.

The spelling of 28514952 in words is "twenty-eight million, five hundred fourteen thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 396041 792082 1188123 1584164 2376246 3168328 3564369 4752492 7128738 9504984 14257476 28514952