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30474450 = 23252241281
BaseRepresentation
bin111010001000…
…0000011010010
32010100021002100
41310100003102
530300140300
63005101230
7520012536
oct164200322
963307070
1030474450
11162249a6
12a257816
13640cc26
144093bc6
152a1e700
hex1d100d2

30474450 has 72 divisors (see below), whose sum is σ = 82506996. Its totient is φ = 8064000.

The previous prime is 30474449. The next prime is 30474467. The reversal of 30474450 is 5447403.

It can be written as a sum of positive squares in 6 ways, for example, as 17665209 + 12809241 = 4203^2 + 3579^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 108310 + ... + 108590.

Almost surely, 230474450 is an apocalyptic number.

30474450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30474450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41253498).

30474450 is an abundant number, since it is smaller than the sum of its proper divisors (52032546).

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

30474450 is a wasteful number, since it uses less digits than its factorization.

30474450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 30474450 is about 5520.3668356369. The cubic root of 30474450 is about 312.3527199317.

The spelling of 30474450 in words is "thirty million, four hundred seventy-four thousand, four hundred fifty".

Divisors: 1 2 3 5 6 9 10 15 18 25 30 45 50 75 90 150 225 241 281 450 482 562 723 843 1205 1405 1446 1686 2169 2410 2529 2810 3615 4215 4338 5058 6025 7025 7230 8430 10845 12050 12645 14050 18075 21075 21690 25290 36150 42150 54225 63225 67721 108450 126450 135442 203163 338605 406326 609489 677210 1015815 1218978 1693025 2031630 3047445 3386050 5079075 6094890 10158150 15237225 30474450