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40851642 = 2313677817
BaseRepresentation
bin1001101111010…
…1100010111010
32211212110220210
42123311202322
540424223032
64015331550
71004142666
oct233654272
984773823
1040851642
1121072497
1211820bb6
138604390
1455d58a6
1538be2cc
hex26f58ba

40851642 has 32 divisors (see below), whose sum is σ = 89312832. Its totient is φ = 12380544.

The previous prime is 40851641. The next prime is 40851649. The reversal of 40851642 is 24615804.

It is not an unprimeable number, because it can be changed into a prime (40851641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1318 + ... + 9134.

It is an arithmetic number, because the mean of its divisors is an integer number (2791026).

Almost surely, 240851642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40851642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44656416).

40851642 is an abundant number, since it is smaller than the sum of its proper divisors (48461190).

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

40851642 is a wasteful number, since it uses less digits than its factorization.

40851642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7902.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 40851642 is about 6391.5289250695. The cubic root of 40851642 is about 344.4053103032.

The spelling of 40851642 in words is "forty million, eight hundred fifty-one thousand, six hundred forty-two".

Divisors: 1 2 3 6 13 26 39 67 78 134 201 402 871 1742 2613 5226 7817 15634 23451 46902 101621 203242 304863 523739 609726 1047478 1571217 3142434 6808607 13617214 20425821 40851642