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15045030 = 232571113167
BaseRepresentation
bin111001011001…
…000110100110
31001022100220100
4321121012212
512322420110
61254244530
7241611030
oct71310646
931270810
1015045030
118546610
125056746
133169cb0
141dd8c50
1514c2bc0
hexe591a6

15045030 has 192 divisors, whose sum is σ = 52835328. Its totient is φ = 2868480.

The previous prime is 15045001. The next prime is 15045031. The reversal of 15045030 is 3054051.

15045030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 15044994 and 15045012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15045031) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 90007 + ... + 90173.

It is an arithmetic number, because the mean of its divisors is an integer number (275184).

Almost surely, 215045030 is an apocalyptic number.

15045030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15045030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26417664).

15045030 is an abundant number, since it is smaller than the sum of its proper divisors (37790298).

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

15045030 is a wasteful number, since it uses less digits than its factorization.

15045030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 15045030 is about 3878.7923378289. The cubic root of 15045030 is about 246.8677465155.

Adding to 15045030 its reverse (3054051), we get a palindrome (18099081).

The spelling of 15045030 in words is "fifteen million, forty-five thousand, thirty".