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BaseRepresentation
bin111001010000…
…1001111010010
32002111012110200
41302201033102
530141124222
62551240030
7513112335
oct162411722
962435420
1030020562
1115a44990
12a079016
1362b1460
143db661c
15297eeac
hex1ca13d2

30020562 has 96 divisors (see below), whose sum is σ = 77837760. Its totient is φ = 8242560.

The previous prime is 30020561. The next prime is 30020563. The reversal of 30020562 is 26502003.

It is an interprime number because it is at equal distance from previous prime (30020561) and next prime (30020563).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (30020561) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 275364 + ... + 275472.

It is an arithmetic number, because the mean of its divisors is an integer number (810810).

Almost surely, 230020562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30020562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38918880).

30020562 is an abundant number, since it is smaller than the sum of its proper divisors (47817198).

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

30020562 is a wasteful number, since it uses less digits than its factorization.

30020562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30020562 is about 5479.1022987347. The cubic root of 30020562 is about 310.7942242881.

Adding to 30020562 its reverse (26502003), we get a palindrome (56522565).

The spelling of 30020562 in words is "thirty million, twenty thousand, five hundred sixty-two".