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13219088820 = 22357173159723
BaseRepresentation
bin11000100111110101…
…10100100110110100
31021010021001021211020
430103322310212310
5204033041320240
610023414541140
7645403254360
oct142372644664
937107037736
1013219088820
1156739160a3
12268b0677b0
1313288b0762
148d58ba2a0
155257cc0d0
hex313eb49b4

13219088820 has 192 divisors, whose sum is σ = 46234976256. Its totient is φ = 2751989760.

The previous prime is 13219088809. The next prime is 13219088867. The reversal of 13219088820 is 2888091231.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 191479 + ... + 251201.

It is an arithmetic number, because the mean of its divisors is an integer number (240807168).

Almost surely, 213219088820 is an apocalyptic number.

13219088820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13219088820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23117488128).

13219088820 is an abundant number, since it is smaller than the sum of its proper divisors (33015887436).

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

13219088820 is a wasteful number, since it uses less digits than its factorization.

13219088820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59790 (or 59788 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The spelling of 13219088820 in words is "thirteen billion, two hundred nineteen million, eighty-eight thousand, eight hundred twenty".