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102473680 = 2451280921
BaseRepresentation
bin1100001101110…
…01111111010000
321010211012110111
412012321333100
5202213124210
614100211104
72353004041
oct606717720
9233735414
10102473680
1152930aa1
122a399a94
13182cb71a
14d8768c8
158ee288a
hex61b9fd0

102473680 has 20 divisors (see below), whose sum is σ = 238251492. Its totient is φ = 40989440.

The previous prime is 102473647. The next prime is 102473681. The reversal of 102473680 is 86374201.

It can be written as a sum of positive squares in 2 ways, for example, as 13133376 + 89340304 = 3624^2 + 9452^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102473681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640381 + ... + 640540.

Almost surely, 2102473680 is an apocalyptic number.

102473680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102473680 is an abundant number, since it is smaller than the sum of its proper divisors (135777812).

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

102473680 is a wasteful number, since it uses less digits than its factorization.

102473680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280934 (or 1280928 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 102473680 is about 10122.9284300542. The cubic root of 102473680 is about 467.9550203928.

The spelling of 102473680 in words is "one hundred two million, four hundred seventy-three thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1280921 2561842 5123684 6404605 10247368 12809210 20494736 25618420 51236840 102473680