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3973129880 = 235313204137
BaseRepresentation
bin1110110011010001…
…0010011010011000
3101020220010220120112
43230310102122120
531114110124010
61454125543452
7200313022016
oct35464223230
911226126515
103973129880
111759801315
1292a714b88
134b41a4235
1429995b8b6
15183c18a05
hexecd12698

3973129880 has 32 divisors (see below), whose sum is σ = 9227917440. Its totient is φ = 1537985280.

The previous prime is 3973129879. The next prime is 3973129907. The reversal of 3973129880 is 889213793.

It is a happy number.

It is a super-2 number, since 2×39731298802 = 31571522086697628800, which contains 22 as substring.

It is a congruent number.

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, 1600829 + ... + 1603308.

It is an arithmetic number, because the mean of its divisors is an integer number (288372420).

Almost surely, 23973129880 is an apocalyptic number.

It is an amenable number.

3973129880 is an abundant number, since it is smaller than the sum of its proper divisors (5254787560).

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

3973129880 is a wasteful number, since it uses less digits than its factorization.

3973129880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204179 (or 3204175 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 3973129880 is about 63032.7683034785. The cubic root of 3973129880 is about 1583.8385916459.

The spelling of 3973129880 in words is "three billion, nine hundred seventy-three million, one hundred twenty-nine thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 20 31 40 62 124 155 248 310 620 1240 3204137 6408274 12816548 16020685 25633096 32041370 64082740 99328247 128165480 198656494 397312988 496641235 794625976 993282470 1986564940 3973129880