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30319974 = 2334391279
BaseRepresentation
bin111001110101…
…0010101100110
32010001102012000
41303222111212
530230214344
63001510130
7515500266
oct163522546
963042160
1030319974
1116129933
12a1a2346
136387819
1440537a6
1529dda69
hex1cea566

30319974 has 32 divisors (see below), whose sum is σ = 67584000. Its totient is φ = 10075752.

The previous prime is 30319973. The next prime is 30319987. The reversal of 30319974 is 47991303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30319973) 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, 23067 + ... + 24345.

It is an arithmetic number, because the mean of its divisors is an integer number (2112000).

Almost surely, 230319974 is an apocalyptic number.

30319974 is an abundant number, since it is smaller than the sum of its proper divisors (37264026).

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

30319974 is a wasteful number, since it uses less digits than its factorization.

30319974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729 (or 1723 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 30319974 is about 5506.3575982677. The cubic root of 30319974 is about 311.8240502015.

The spelling of 30319974 in words is "thirty million, three hundred nineteen thousand, nine hundred seventy-four".

Divisors: 1 2 3 6 9 18 27 54 439 878 1279 1317 2558 2634 3837 3951 7674 7902 11511 11853 23022 23706 34533 69066 561481 1122962 1684443 3368886 5053329 10106658 15159987 30319974