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50831430 = 23513130337
BaseRepresentation
bin1100000111101…
…0000001000110
310112122111121120
43001322001012
5101003101210
65013254410
71155026406
oct301720106
9115574546
1050831430
1126769451
1215034406
13a6b9990
146a72806
1546e1270
hex307a046

50831430 has 32 divisors (see below), whose sum is σ = 131380704. Its totient is φ = 12512256.

The previous prime is 50831423. The next prime is 50831437. The reversal of 50831430 is 3413805.

It is an interprime number because it is at equal distance from previous prime (50831423) and next prime (50831437).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 50831430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50831437) 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, 64779 + ... + 65558.

It is an arithmetic number, because the mean of its divisors is an integer number (4105647).

Almost surely, 250831430 is an apocalyptic number.

50831430 is an abundant number, since it is smaller than the sum of its proper divisors (80549274).

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

50831430 is a wasteful number, since it uses less digits than its factorization.

50831430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130360.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 50831430 is about 7129.6163992181. The cubic root of 50831430 is about 370.4339442339.

The spelling of 50831430 in words is "fifty million, eight hundred thirty-one thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 130337 260674 391011 651685 782022 1303370 1694381 1955055 3388762 3910110 5083143 8471905 10166286 16943810 25415715 50831430