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87253702 = 243626851
BaseRepresentation
bin1010011001101…
…10001011000110
320002011221120121
411030312023012
5134314104302
612354052154
72106433654
oct514661306
9202157517
1087253702
1145285aa8
122527a05a
13150ccc13
14b833dd4
1579d7e37
hex53362c6

87253702 has 4 divisors (see below), whose sum is σ = 130880556. Its totient is φ = 43626850.

The previous prime is 87253693. The next prime is 87253709. The reversal of 87253702 is 20735278.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20735278 = 210367639.

It is a super-2 number, since 2×872537022 = 15226417025409608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87253709) by changing a digit.

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 as a sum of consecutive naturals, namely, 21813424 + ... + 21813427.

It is an arithmetic number, because the mean of its divisors is an integer number (32720139).

Almost surely, 287253702 is an apocalyptic number.

87253702 is a deficient number, since it is larger than the sum of its proper divisors (43626854).

87253702 is a wasteful number, since it uses less digits than its factorization.

87253702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43626853.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 87253702 is about 9340.9690075495. The cubic root of 87253702 is about 443.5350589811.

The spelling of 87253702 in words is "eighty-seven million, two hundred fifty-three thousand, seven hundred two".

Divisors: 1 2 43626851 87253702