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30803969 = 723293653
BaseRepresentation
bin111010110000…
…0100000000001
32010222000002202
41311200200001
530341211334
63020122545
7522554330
oct165404001
963860082
1030803969
111642a529
12a396455
1364c6c01
14413bd17
152a8717e
hex1d60801

30803969 has 16 divisors (see below), whose sum is σ = 36916992. Its totient is φ = 25130688.

The previous prime is 30803951. The next prime is 30804031. The reversal of 30803969 is 96930803.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 30803969 - 220 = 29755393 is a prime.

It is a super-2 number, since 2×308039692 = 1897769012305922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30803939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46847 + ... + 47499.

It is an arithmetic number, because the mean of its divisors is an integer number (2307312).

Almost surely, 230803969 is an apocalyptic number.

It is an amenable number.

30803969 is a deficient number, since it is larger than the sum of its proper divisors (6113023).

30803969 is a wasteful number, since it uses less digits than its factorization.

30803969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 30803969 is about 5550.1323407645. The cubic root of 30803969 is about 313.4745054464.

The spelling of 30803969 in words is "thirty million, eight hundred three thousand, nine hundred sixty-nine".

Divisors: 1 7 23 161 293 653 2051 4571 6739 15019 47173 105133 191329 1339303 4400567 30803969