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15030390 = 235501013
BaseRepresentation
bin111001010101…
…100001110110
31001021121211010
4321111201312
512321433030
61254053050
7241520244
oct71254166
931247733
1015030390
118536611
12504a186
13316342b
141dd3794
1514bd6b0
hexe55876

15030390 has 16 divisors (see below), whose sum is σ = 36073008. Its totient is φ = 4008096.

The previous prime is 15030373. The next prime is 15030401. The reversal of 15030390 is 9303051.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250477 + ... + 250536.

It is an arithmetic number, because the mean of its divisors is an integer number (2254563).

Almost surely, 215030390 is an apocalyptic number.

15030390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15030390 is an abundant number, since it is smaller than the sum of its proper divisors (21042618).

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

15030390 is a wasteful number, since it uses less digits than its factorization.

15030390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501023.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 15030390 is about 3876.9046931799. The cubic root of 15030390 is about 246.7876466038.

The spelling of 15030390 in words is "fifteen million, thirty thousand, three hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 501013 1002026 1503039 2505065 3006078 5010130 7515195 15030390