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30411906 = 237724093
BaseRepresentation
bin111010000000…
…0110010000010
32010020002021220
41310000302002
530241140111
63003455510
7516332310
oct164006202
963202256
1030411906
1116191a08
12a227596
1363ba615
1440790b0
152a0ae06
hex1d00c82

30411906 has 16 divisors (see below), whose sum is σ = 69513024. Its totient is φ = 8689104.

The previous prime is 30411893. The next prime is 30411907. The reversal of 30411906 is 60911403.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30411907) 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, 362005 + ... + 362088.

It is an arithmetic number, because the mean of its divisors is an integer number (4344564).

Almost surely, 230411906 is an apocalyptic number.

30411906 is an abundant number, since it is smaller than the sum of its proper divisors (39101118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30411906 is a wasteful number, since it uses less digits than its factorization.

30411906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724105.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 30411906 is about 5514.6990851723. The cubic root of 30411906 is about 312.1388886897.

The spelling of 30411906 in words is "thirty million, four hundred eleven thousand, nine hundred six".

Divisors: 1 2 3 6 7 14 21 42 724093 1448186 2172279 4344558 5068651 10137302 15205953 30411906