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12400000430 = 2517451916141
BaseRepresentation
bin10111000110001100…
…01111110110101110
31012000011210021210012
423203012033312232
5200343400003210
65410235013222
7616166156516
oct134306176656
935004707705
1012400000430
115293527944
1224a089a212
131227ca637c
14858bc2846
154c8934305
hex2e318fdae

12400000430 has 32 divisors (see below), whose sum is σ = 23639636160. Its totient is φ = 4666913280.

The previous prime is 12400000399. The next prime is 12400000463. The reversal of 12400000430 is 3400000421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 760160 + ... + 776300.

It is an arithmetic number, because the mean of its divisors is an integer number (738738630).

Almost surely, 212400000430 is an apocalyptic number.

12400000430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12400000430 is a deficient number, since it is larger than the sum of its proper divisors (11239635730).

12400000430 is a wasteful number, since it uses less digits than its factorization.

12400000430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20684.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 12400000430 its reverse (3400000421), we get a palindrome (15800000851).

Subtracting from 12400000430 its reverse (3400000421), we obtain a palindrome (9000000009).

The spelling of 12400000430 in words is "twelve billion, four hundred million, four hundred thirty", and thus it is an aban number.

Divisors: 1 2 5 10 17 34 85 170 4519 9038 16141 22595 32282 45190 76823 80705 153646 161410 274397 384115 548794 768230 1371985 2743970 72941179 145882358 364705895 729411790 1240000043 2480000086 6200000215 12400000430