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BaseRepresentation
bin11101001000101110…
…00110110011010100
31111101010222101122220
432210113012303110
5224013430004414
611104103222340
71062430253163
oct164427066324
944333871586
1015642422484
1166a7815597
1230467479b0
131623978cc0
14a856913da
15618411ca9
hex3a45c6cd4

15642422484 has 72 divisors (see below), whose sum is σ = 39756349920. Its totient is φ = 4758597888.

The previous prime is 15642422479. The next prime is 15642422507. The reversal of 15642422484 is 48422424651.

15642422484 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1229347 + ... + 1242005.

Almost surely, 215642422484 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15642422484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19878174960).

15642422484 is an abundant number, since it is smaller than the sum of its proper divisors (24113927436).

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

15642422484 is a wasteful number, since it uses less digits than its factorization.

15642422484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12857 (or 12766 counting only the distinct ones).

The product of its digits is 491520, while the sum is 42.

The spelling of 15642422484 in words is "fifteen billion, six hundred forty-two million, four hundred twenty-two thousand, four hundred eighty-four".