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42630072 = 2331993487
BaseRepresentation
bin1010001010011…
…1101110111000
32222012211110120
42202213232320
541403130242
64121413240
71025230632
oct242475670
988184416
1042630072
1122077671
121233a220
138aa79c4
145939a52
153b211ec
hex28a7bb8

42630072 has 32 divisors (see below), whose sum is σ = 112185600. Its totient is φ = 13461984.

The previous prime is 42630019. The next prime is 42630083. The reversal of 42630072 is 27003624.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 46288 + ... + 47199.

It is an arithmetic number, because the mean of its divisors is an integer number (3505800).

Almost surely, 242630072 is an apocalyptic number.

It is an amenable number.

42630072 is an abundant number, since it is smaller than the sum of its proper divisors (69555528).

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

42630072 is a wasteful number, since it uses less digits than its factorization.

42630072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93515 (or 93511 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 42630072 is about 6529.1708508815. The cubic root of 42630072 is about 349.3322561136.

Adding to 42630072 its reverse (27003624), we get a palindrome (69633696).

The spelling of 42630072 in words is "forty-two million, six hundred thirty thousand, seventy-two".