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30403412 = 221317163211
BaseRepresentation
bin111001111111…
…0101101010100
32010012122122022
41303332231110
530240402122
63003352312
7516265454
oct163765524
963178568
1030403412
1116186596
12a222698
1363b67b0
144075d64
152a08642
hex1cfeb54

30403412 has 48 divisors (see below), whose sum is σ = 61330752. Its totient is φ = 13063680.

The previous prime is 30403409. The next prime is 30403421. The reversal of 30403412 is 21430403.

It is a super-2 number, since 2×304034122 = 1848734922483488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143987 + ... + 144197.

It is an arithmetic number, because the mean of its divisors is an integer number (1277724).

Almost surely, 230403412 is an apocalyptic number.

It is an amenable number.

30403412 is an abundant number, since it is smaller than the sum of its proper divisors (30927340).

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

30403412 is a wasteful number, since it uses less digits than its factorization.

30403412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30403412 is about 5513.9289077753. The cubic root of 30403412 is about 312.1098260084.

Adding to 30403412 its reverse (21430403), we get a palindrome (51833815).

The spelling of 30403412 in words is "thirty million, four hundred three thousand, four hundred twelve".

Divisors: 1 2 4 13 17 26 34 52 68 163 211 221 326 422 442 652 844 884 2119 2743 2771 3587 4238 5486 5542 7174 8476 10972 11084 14348 34393 36023 46631 68786 72046 93262 137572 144092 186524 447109 584681 894218 1169362 1788436 2338724 7600853 15201706 30403412