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30078401 = 315318307
BaseRepresentation
bin111001010111…
…1010111000001
32002121010210212
41302233113001
530200002101
62552403505
7513443063
oct162572701
962533725
1030078401
1115a84391
12a0a6595
136301892
143dcd733
1529921bb
hex1caf5c1

30078401 has 8 divisors (see below), whose sum is σ = 31636224. Its totient is φ = 28557360.

The previous prime is 30078397. The next prime is 30078403. The reversal of 30078401 is 10487003.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30078401 - 22 = 30078397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30078403) 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, 7511 + ... + 10796.

It is an arithmetic number, because the mean of its divisors is an integer number (3954528).

Almost surely, 230078401 is an apocalyptic number.

30078401 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30078401 is a deficient number, since it is larger than the sum of its proper divisors (1557823).

30078401 is a wasteful number, since it uses less digits than its factorization.

30078401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18391.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 30078401 is about 5484.3779045576. The cubic root of 30078401 is about 310.9936930721.

The spelling of 30078401 in words is "thirty million, seventy-eight thousand, four hundred one".

Divisors: 1 31 53 1643 18307 567517 970271 30078401