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15254123400030 = 235508470780001
BaseRepresentation
bin1101110111111010000010…
…0110110100101101011110
32000000021120002100122211110
43131332200212310231132
53444410421042300110
652235351512002450
73133034253354564
oct335764046645536
960007502318743
1015254123400030
114951267a92249
121864427090426
138685c4647738
143aa436b9da34
151b6bdc47ba20
hexddfa09b4b5e

15254123400030 has 16 divisors (see below), whose sum is σ = 36609896160144. Its totient is φ = 4067766240000.

The previous prime is 15254123400023. The next prime is 15254123400031. The reversal of 15254123400030 is 3000432145251.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 508470780001 = 15254123400030 / (1 + 5 + 2 + 5 + 4 + 1 + 2 + 3 + 4 + 0 + 0 + 0 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15254123400031) 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, 254235389971 + ... + 254235390030.

It is an arithmetic number, because the mean of its divisors is an integer number (2288118510009).

Almost surely, 215254123400030 is an apocalyptic number.

15254123400030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15254123400030 is an abundant number, since it is smaller than the sum of its proper divisors (21355772760114).

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

15254123400030 is a wasteful number, since it uses less digits than its factorization.

15254123400030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508470780011.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 15254123400030 its reverse (3000432145251), we get a palindrome (18254555545281).

The spelling of 15254123400030 in words is "fifteen trillion, two hundred fifty-four billion, one hundred twenty-three million, four hundred thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 508470780001 1016941560002 1525412340003 2542353900005 3050824680006 5084707800010 7627061700015 15254123400030