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872090481 = 319313713339
BaseRepresentation
bin110011111110110…
…000101101110001
32020202222210020110
4303332300231301
53241223343411
6222311531533
730416434563
oct6376605561
92222883213
10872090481
114082aa539
12204089ba9
1310b8a4092
1483b73333
15518672a6
hex33fb0b71

872090481 has 32 divisors (see below), whose sum is σ = 1297715200. Its totient is φ = 518581440.

The previous prime is 872090473. The next prime is 872090603. The reversal of 872090481 is 184090278.

It is not a de Polignac number, because 872090481 - 23 = 872090473 is a prime.

It is a super-2 number, since 2×8720904812 = 1521083614101622722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (872090411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58710 + ... + 72048.

It is an arithmetic number, because the mean of its divisors is an integer number (40553600).

Almost surely, 2872090481 is an apocalyptic number.

It is an amenable number.

872090481 is a deficient number, since it is larger than the sum of its proper divisors (425624719).

872090481 is a wasteful number, since it uses less digits than its factorization.

872090481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13429.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 872090481 is about 29531.1781173728. The cubic root of 872090481 is about 955.4042790033.

The spelling of 872090481 in words is "eight hundred seventy-two million, ninety thousand, four hundred eighty-one".

Divisors: 1 3 19 31 37 57 93 111 589 703 1147 1767 2109 3441 13339 21793 40017 65379 253441 413509 493543 760323 1240527 1480629 7856671 9377317 15299833 23570013 28131951 45899499 290696827 872090481