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30024990 = 23251492239
BaseRepresentation
bin111001010001…
…0010100011110
32002111102112200
41302202110132
530141244430
62551312330
7513131262
oct162422436
962442480
1030024990
1115a48246
12a07b6a6
1362b3488
143db80a2
152981460
hex1ca251e

30024990 has 48 divisors (see below), whose sum is σ = 78624000. Its totient is φ = 7949376.

The previous prime is 30024983. The next prime is 30025007. The reversal of 30024990 is 9942003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12291 + ... + 14529.

It is an arithmetic number, because the mean of its divisors is an integer number (1638000).

Almost surely, 230024990 is an apocalyptic number.

30024990 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 30024990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39312000).

30024990 is an abundant number, since it is smaller than the sum of its proper divisors (48599010).

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

30024990 is a wasteful number, since it uses less digits than its factorization.

30024990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401 (or 2398 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 30024990 is about 5479.5063646281. The cubic root of 30024990 is about 310.8095041393.

Adding to 30024990 its reverse (9942003), we get a palindrome (39966993).

The spelling of 30024990 in words is "thirty million, twenty-four thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 149 298 447 745 894 1341 1490 2235 2239 2682 4470 4478 6705 6717 11195 13410 13434 20151 22390 33585 40302 67170 100755 201510 333611 667222 1000833 1668055 2001666 3002499 3336110 5004165 6004998 10008330 15012495 30024990