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131494572 = 223211230187
BaseRepresentation
bin1111101011001…
…11001010101100
3100011102121122100
413311213022230
5232130311242
621014215100
73154454046
oct765471254
9304377570
10131494572
1168252900
1238054490
132131cb51
141366ca96
15b82654c
hex7d672ac

131494572 has 54 divisors (see below), whose sum is σ = 365365364. Its totient is φ = 39845520.

The previous prime is 131494553. The next prime is 131494577. The reversal of 131494572 is 275494131.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (131494577) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10738 + ... + 19449.

Almost surely, 2131494572 is an apocalyptic number.

131494572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131494572 is an abundant number, since it is smaller than the sum of its proper divisors (233870792).

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

131494572 is a wasteful number, since it uses less digits than its factorization.

131494572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30219 (or 30203 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 131494572 is about 11467.1082666904. The cubic root of 131494572 is about 508.5136423393.

The spelling of 131494572 in words is "one hundred thirty-one million, four hundred ninety-four thousand, five hundred seventy-two".

Divisors: 1 2 3 4 6 9 11 12 18 22 33 36 44 66 99 121 132 198 242 363 396 484 726 1089 1452 2178 4356 30187 60374 90561 120748 181122 271683 332057 362244 543366 664114 996171 1086732 1328228 1992342 2988513 3652627 3984684 5977026 7305254 10957881 11954052 14610508 21915762 32873643 43831524 65747286 131494572