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30452897 = 231324039
BaseRepresentation
bin111010000101…
…0110010100001
32010022011112002
41310022302201
530243443042
63004413345
7516562646
oct164126241
963264462
1030452897
111620a792
12a247255
136403187
144089dcd
152a18132
hex1d0aca1

30452897 has 4 divisors (see below), whose sum is σ = 31776960. Its totient is φ = 29128836.

The previous prime is 30452879. The next prime is 30452923. The reversal of 30452897 is 79825403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30452897 - 26 = 30452833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30452897.

It is not an unprimeable number, because it can be changed into a prime (30452827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661997 + ... + 662042.

It is an arithmetic number, because the mean of its divisors is an integer number (7944240).

Almost surely, 230452897 is an apocalyptic number.

It is an amenable number.

30452897 is a deficient number, since it is larger than the sum of its proper divisors (1324063).

30452897 is a wasteful number, since it uses less digits than its factorization.

30452897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324062.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 30452897 is about 5518.4143555916. The cubic root of 30452897 is about 312.2790655984.

The spelling of 30452897 in words is "thirty million, four hundred fifty-two thousand, eight hundred ninety-seven".

Divisors: 1 23 1324039 30452897