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49751442 = 23313131541
BaseRepresentation
bin1011110111001…
…0010110010010
310110121122011000
42331302112102
5100214021232
64534202430
71142610636
oct275622622
9113548130
1049751442
11260a0aa4
12147b3416
13a3cc230
146870dc6
15457b27c
hex2f72592

49751442 has 64 divisors (see below), whose sum is σ = 120193920. Its totient is φ = 15163200.

The previous prime is 49751441. The next prime is 49751477. The reversal of 49751442 is 24415794.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 49751397 and 49751406.

It is not an unprimeable number, because it can be changed into a prime (49751441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91692 + ... + 92232.

It is an arithmetic number, because the mean of its divisors is an integer number (1878030).

Almost surely, 249751442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49751442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60096960).

49751442 is an abundant number, since it is smaller than the sum of its proper divisors (70442478).

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

49751442 is a wasteful number, since it uses less digits than its factorization.

49751442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 690 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 49751442 is about 7053.4702097620. The cubic root of 49751442 is about 367.7916718227.

The spelling of 49751442 in words is "forty-nine million, seven hundred fifty-one thousand, four hundred forty-two".

Divisors: 1 2 3 6 9 13 18 26 27 39 54 78 117 131 234 262 351 393 541 702 786 1082 1179 1623 1703 2358 3246 3406 3537 4869 5109 7033 7074 9738 10218 14066 14607 15327 21099 29214 30654 42198 45981 63297 70871 91962 126594 141742 189891 212613 379782 425226 637839 921323 1275678 1842646 1913517 2763969 3827034 5527938 8291907 16583814 24875721 49751442