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30220963 = 1913911443
BaseRepresentation
bin111001101001…
…0001010100011
32002212101100221
41303102022203
530214032323
62555423511
7514605523
oct163221243
962771327
1030220963
1116071503
12a154b97
136351736
144029683
1529be55d
hex1cd22a3

30220963 has 8 divisors (see below), whose sum is σ = 32043200. Its totient is φ = 28421928.

The previous prime is 30220961. The next prime is 30220997. The reversal of 30220963 is 36902203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30220963 - 21 = 30220961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30220961) 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, 3081 + ... + 8362.

It is an arithmetic number, because the mean of its divisors is an integer number (4005400).

Almost surely, 230220963 is an apocalyptic number.

30220963 is a deficient number, since it is larger than the sum of its proper divisors (1822237).

30220963 is a wasteful number, since it uses less digits than its factorization.

30220963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11601.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 30220963 is about 5497.3596389540. The cubic root of 30220963 is about 311.4842557272.

The spelling of 30220963 in words is "thirty million, two hundred twenty thousand, nine hundred sixty-three".

Divisors: 1 19 139 2641 11443 217417 1590577 30220963