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30374081 = 50236047
BaseRepresentation
bin111001111011…
…1100011000001
32010011011101222
41303313203001
530233432311
63003004425
7516114113
oct163674301
963134358
1030374081
1116166551
12a209715
1363a633a
1440693b3
1529eeadb
hex1cf78c1

30374081 has 4 divisors (see below), whose sum is σ = 30385152. Its totient is φ = 30363012.

The previous prime is 30374063. The next prime is 30374101. The reversal of 30374081 is 18047303.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30374081 is a prime.

It is a super-2 number, since 2×303740812 = 1845169593189122, which contains 22 as substring.

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 30374081.

It is not an unprimeable number, because it can be changed into a prime (30374011) 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, 2000 + ... + 8046.

It is an arithmetic number, because the mean of its divisors is an integer number (7596288).

Almost surely, 230374081 is an apocalyptic number.

It is an amenable number.

30374081 is a deficient number, since it is larger than the sum of its proper divisors (11071).

30374081 is an equidigital number, since it uses as much as digits as its factorization.

30374081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11070.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 30374081 is about 5511.2685472584. The cubic root of 30374081 is about 312.0094267643.

The spelling of 30374081 in words is "thirty million, three hundred seventy-four thousand, eighty-one".

Divisors: 1 5023 6047 30374081