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100800054 = 23219476271
BaseRepresentation
bin1100000001000…
…01011000110110
321000200011200100
412000201120312
5201301100204
614000254530
72332533465
oct600413066
9230604610
10100800054
1151998633
1229911446
1317b63a04
14d55c9dc
158cb1a39
hex6021636

100800054 has 48 divisors (see below), whose sum is σ = 234823680. Its totient is φ = 31149360.

The previous prime is 100800047. The next prime is 100800061. The reversal of 100800054 is 450008001.

It is an interprime number because it is at equal distance from previous prime (100800047) and next prime (100800061).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12939 + ... + 19209.

It is an arithmetic number, because the mean of its divisors is an integer number (4892160).

Almost surely, 2100800054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100800054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117411840).

100800054 is an abundant number, since it is smaller than the sum of its proper divisors (134023626).

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

100800054 is a wasteful number, since it uses less digits than its factorization.

100800054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6345 (or 6342 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 100800054 is about 10039.9230076729. The cubic root of 100800054 is about 465.3934373961.

Adding to 100800054 its reverse (450008001), we get a palindrome (550808055).

The spelling of 100800054 in words is "one hundred million, eight hundred thousand, fifty-four".

Divisors: 1 2 3 6 9 18 19 38 47 57 94 114 141 171 282 342 423 846 893 1786 2679 5358 6271 8037 12542 16074 18813 37626 56439 112878 119149 238298 294737 357447 589474 714894 884211 1072341 1768422 2144682 2652633 5305266 5600003 11200006 16800009 33600018 50400027 100800054