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15131052 = 2232420307
BaseRepresentation
bin111001101110…
…000110101100
31001110201220100
4321232012230
512333143202
61300151100
7242416566
oct71560654
931421810
1015131052
1185a5202
125098490
13319a1b1
14201c336
1514dd41c
hexe6e1ac

15131052 has 18 divisors (see below), whose sum is σ = 38248028. Its totient is φ = 5043672.

The previous prime is 15131041. The next prime is 15131063. The reversal of 15131052 is 25013151.

It is an interprime number because it is at equal distance from previous prime (15131041) and next prime (15131063).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210118 + ... + 210189.

Almost surely, 215131052 is an apocalyptic number.

15131052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15131052 is an abundant number, since it is smaller than the sum of its proper divisors (23116976).

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

15131052 is a wasteful number, since it uses less digits than its factorization.

15131052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420317 (or 420312 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 15131052 is about 3889.8652932974. The cubic root of 15131052 is about 247.3373525807.

The spelling of 15131052 in words is "fifteen million, one hundred thirty-one thousand, fifty-two".

Divisors: 1 2 3 4 6 9 12 18 36 420307 840614 1260921 1681228 2521842 3782763 5043684 7565526 15131052