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30412669 = 74344667
BaseRepresentation
bin111010000000…
…0111101111101
32010020010100011
41310000331331
530241201134
63003503221
7516334450
oct164007575
963203304
1030412669
1116192541
12a227b11
1363baa81
144079497
152a0b264
hex1d00f7d

30412669 has 4 divisors (see below), whose sum is σ = 34757344. Its totient is φ = 26067996.

The previous prime is 30412667. The next prime is 30412687. The reversal of 30412669 is 96621403.

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 an emirpimes, since its reverse is a distinct semiprime: 96621403 = 195085337.

It is a cyclic number.

It is not a de Polignac number, because 30412669 - 21 = 30412667 is a prime.

It is a super-2 number, since 2×304126692 = 1849860871407122, 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 30412669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30412667) 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, 2172327 + ... + 2172340.

It is an arithmetic number, because the mean of its divisors is an integer number (8689336).

Almost surely, 230412669 is an apocalyptic number.

It is an amenable number.

30412669 is a deficient number, since it is larger than the sum of its proper divisors (4344675).

30412669 is an equidigital number, since it uses as much as digits as its factorization.

30412669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344674.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 30412669 is about 5514.7682634903. The cubic root of 30412669 is about 312.1414990706.

The spelling of 30412669 in words is "thirty million, four hundred twelve thousand, six hundred sixty-nine".

Divisors: 1 7 4344667 30412669