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42745444 = 22724672
BaseRepresentation
bin1010001100001…
…1111001100100
32222102200201121
42203003321210
541420323234
64124103324
71026221200
oct243037144
988380647
1042745444
1122146315
1212394b44
138b18381
145969b00
153b454b4
hex28c3e64

42745444 has 27 divisors (see below), whose sum is σ = 87204243. Its totient is φ = 18280248.

The previous prime is 42745433. The next prime is 42745453. The reversal of 42745444 is 44454724.

The square root of 42745444 is 6538.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 91299 + ... + 91765.

Almost surely, 242745444 is an apocalyptic number.

42745444 is the 6538-th square number.

It is an amenable number.

42745444 is an abundant number, since it is smaller than the sum of its proper divisors (44458799).

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

42745444 is an equidigital number, since it uses as much as digits as its factorization.

42745444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952 (or 476 counting only the distinct ones).

The product of its digits is 71680, while the sum is 34.

The cubic root of 42745444 is about 349.6471109844.

The spelling of 42745444 in words is "forty-two million, seven hundred forty-five thousand, four hundred forty-four".

Divisors: 1 2 4 7 14 28 49 98 196 467 934 1868 3269 6538 13076 22883 45766 91532 218089 436178 872356 1526623 3053246 6106492 10686361 21372722 42745444