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102912948 = 223223124291
BaseRepresentation
bin1100010001001…
…01001110110100
321011122112000200
412020211032310
5202321203243
614113440500
72356513515
oct610451664
9234575020
10102912948
1153101026
122a570130
1318423648
14d94ca0c
15907cad3
hex62253b4

102912948 has 36 divisors (see below), whose sum is σ = 271453728. Its totient is φ = 32812560.

The previous prime is 102912923. The next prime is 102912961. The reversal of 102912948 is 849219201.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61318 + ... + 62973.

Almost surely, 2102912948 is an apocalyptic number.

102912948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

102912948 is an abundant number, since it is smaller than the sum of its proper divisors (168540780).

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

102912948 is a wasteful number, since it uses less digits than its factorization.

102912948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124324 (or 124319 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 102912948 is about 10144.6019143188. The cubic root of 102912948 is about 468.6227191489.

The spelling of 102912948 in words is "one hundred two million, nine hundred twelve thousand, nine hundred forty-eight".

Divisors: 1 2 3 4 6 9 12 18 23 36 46 69 92 138 207 276 414 828 124291 248582 372873 497164 745746 1118619 1491492 2237238 2858693 4474476 5717386 8576079 11434772 17152158 25728237 34304316 51456474 102912948