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988142442 = 23717281409
BaseRepresentation
bin111010111001011…
…101101101101010
32112212100211121020
4322321131231222
54010431024232
6242015153310
733326033520
oct7271355552
92485324536
10988142442
11467865051
12236b15836
13129947c91
1495342310
155bb3ce2c
hex3ae5db6a

988142442 has 48 divisors (see below), whose sum is σ = 2399315520. Its totient is φ = 265715712.

The previous prime is 988142383. The next prime is 988142447. The reversal of 988142442 is 244241889.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 988142394 and 988142403.

It is not an unprimeable number, because it can be changed into a prime (988142447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28567 + ... + 52842.

It is an arithmetic number, because the mean of its divisors is an integer number (49985740).

Almost surely, 2988142442 is an apocalyptic number.

988142442 is an abundant number, since it is smaller than the sum of its proper divisors (1411173078).

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

988142442 is a wasteful number, since it uses less digits than its factorization.

988142442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81455 (or 81438 counting only the distinct ones).

The product of its digits is 147456, while the sum is 42.

The square root of 988142442 is about 31434.7330511967. The cubic root of 988142442 is about 996.0317545238.

The spelling of 988142442 in words is "nine hundred eighty-eight million, one hundred forty-two thousand, four hundred forty-two".

Divisors: 1 2 3 6 7 14 17 21 34 42 51 102 119 238 289 357 578 714 867 1734 2023 4046 6069 12138 81409 162818 244227 488454 569863 1139726 1383953 1709589 2767906 3419178 4151859 8303718 9687671 19375342 23527201 29063013 47054402 58126026 70581603 141163206 164690407 329380814 494071221 988142442