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109810420 = 2257577253
BaseRepresentation
bin1101000101110…
…01001011110100
321122121221120121
412202321023310
5211102413140
614521341324
72502241666
oct642711364
9248557517
10109810420
1156a92215
1230937844
1319999ca5
1410826536
15999164a
hex68b92f4

109810420 has 24 divisors (see below), whose sum is σ = 230938344. Its totient is φ = 43860096.

The previous prime is 109810409. The next prime is 109810427. The reversal of 109810420 is 24018901.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25280784 + 84529636 = 5028^2 + 9194^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109810427) 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, 11514 + ... + 18766.

It is an arithmetic number, because the mean of its divisors is an integer number (9622431).

Almost surely, 2109810420 is an apocalyptic number.

109810420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109810420 is an abundant number, since it is smaller than the sum of its proper divisors (121127924).

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

109810420 is a wasteful number, since it uses less digits than its factorization.

109810420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8019 (or 8017 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 109810420 is about 10479.0467123684. The cubic root of 109810420 is about 478.8665676110.

The spelling of 109810420 in words is "one hundred nine million, eight hundred ten thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 757 1514 3028 3785 7253 7570 14506 15140 29012 36265 72530 145060 5490521 10981042 21962084 27452605 54905210 109810420