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8474702981 = 1923160112113
BaseRepresentation
bin1111110010010000…
…11011010010000101
3210212121122111222012
413321020123102011
5114324010443411
63520534144005
7420003533603
oct77110332205
923777574865
108474702981
113659826868
1217861b2005
13a509aba64
145a5756873
1534901818b
hex1f921b485

8474702981 has 16 divisors (see below), whose sum is σ = 9315181440. Its totient is φ = 7674163200.

The previous prime is 8474702969. The next prime is 8474702989. The reversal of 8474702981 is 1892074748.

It is a cyclic number.

It is not a de Polignac number, because 8474702981 - 210 = 8474701957 is a prime.

It is a super-2 number, since 2×84747029812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8474702989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693581 + ... + 705693.

It is an arithmetic number, because the mean of its divisors is an integer number (582198840).

Almost surely, 28474702981 is an apocalyptic number.

It is an amenable number.

8474702981 is a deficient number, since it is larger than the sum of its proper divisors (840478459).

8474702981 is a wasteful number, since it uses less digits than its factorization.

8474702981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13756.

The product of its (nonzero) digits is 903168, while the sum is 50.

The square root of 8474702981 is about 92058.1499977053. The cubic root of 8474702981 is about 2038.8009566809.

The spelling of 8474702981 in words is "eight billion, four hundred seventy-four million, seven hundred two thousand, nine hundred eighty-one".

Divisors: 1 19 23 437 1601 12113 30419 36823 230147 278599 699637 5293381 19392913 368465347 446036999 8474702981