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30023320 = 235773971
BaseRepresentation
bin111001010000…
…1111010011000
32002111100020211
41302201322120
530141221240
62551300504
7513123355
oct162417230
962440224
1030023320
1115a46a68
12a07a734
1362b27a2
143db762c
152980bea
hex1ca1e98

30023320 has 32 divisors (see below), whose sum is σ = 67709520. Its totient is φ = 11981440.

The previous prime is 30023311. The next prime is 30023321. The reversal of 30023320 is 2332003.

It is a self number, because there is not a number n which added to its sum of digits gives 30023320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30023321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30435 + ... + 31405.

Almost surely, 230023320 is an apocalyptic number.

It is an amenable number.

30023320 is an abundant number, since it is smaller than the sum of its proper divisors (37686200).

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

30023320 is a wasteful number, since it uses less digits than its factorization.

30023320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755 (or 1751 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 13.

The square root of 30023320 is about 5479.3539765195. The cubic root of 30023320 is about 310.8037415896.

Adding to 30023320 its reverse (2332003), we get a palindrome (32355323).

The spelling of 30023320 in words is "thirty million, twenty-three thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 773 971 1546 1942 3092 3865 3884 4855 6184 7730 7768 9710 15460 19420 30920 38840 750583 1501166 3002332 3752915 6004664 7505830 15011660 30023320