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142632880 = 24513137147
BaseRepresentation
bin10001000000001…
…10011110110000
3100221101111112021
420200012132300
5243003223010
622053041224
73351234205
oct1040063660
9327344467
10142632880
1173570215
123b926214
132371c870
1414d2bcac
15c7c68da
hex88067b0

142632880 has 40 divisors (see below), whose sum is σ = 357133392. Its totient is φ = 52664064.

The previous prime is 142632877. The next prime is 142632901. The reversal of 142632880 is 88236241.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67534 + ... + 69613.

Almost surely, 2142632880 is an apocalyptic number.

142632880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142632880 is an abundant number, since it is smaller than the sum of its proper divisors (214500512).

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

142632880 is a wasteful number, since it uses less digits than its factorization.

142632880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137173 (or 137167 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 142632880 is about 11942.9008201525. The cubic root of 142632880 is about 522.4842665226.

The spelling of 142632880 in words is "one hundred forty-two million, six hundred thirty-two thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 13 16 20 26 40 52 65 80 104 130 208 260 520 1040 137147 274294 548588 685735 1097176 1371470 1782911 2194352 2742940 3565822 5485880 7131644 8914555 10971760 14263288 17829110 28526576 35658220 71316440 142632880