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30221132 = 2229260527
BaseRepresentation
bin111001101001…
…0001101001100
32002212101121012
41303102031030
530214034012
62555424352
7514606154
oct163221514
962771535
1030221132
1116071647
12a1550b8
136351836
144029764
1529be622
hex1cd234c

30221132 has 12 divisors (see below), whose sum is σ = 54710880. Its totient is φ = 14589456.

The previous prime is 30221123. The next prime is 30221137. The reversal of 30221132 is 23112203.

It is a happy number.

It is a super-2 number, since 2×302211322 = 1826633638722848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30221137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130148 + ... + 130379.

It is an arithmetic number, because the mean of its divisors is an integer number (4559240).

Almost surely, 230221132 is an apocalyptic number.

It is an amenable number.

30221132 is a deficient number, since it is larger than the sum of its proper divisors (24489748).

30221132 is a wasteful number, since it uses less digits than its factorization.

30221132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260560 (or 260558 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30221132 is about 5497.3750099479. The cubic root of 30221132 is about 311.4848363478.

Adding to 30221132 its reverse (23112203), we get a palindrome (53333335).

The spelling of 30221132 in words is "thirty million, two hundred twenty-one thousand, one hundred thirty-two".

Divisors: 1 2 4 29 58 116 260527 521054 1042108 7555283 15110566 30221132