102070287 has 40 divisors (see below), whose sum is σ = 168193872. Its totient is φ = 61171200.

The previous prime is 102070237. The next prime is 102070289. The reversal of 102070287 is 782070201.

It is a de Polignac number, because none of the positive numbers 2^k-102070287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 102070287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102070289) 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 in 39 ways as a sum of consecutive naturals, for example, 85837 + ... + 87017.

Almost surely, 2^102070287 is an apocalyptic number.

102070287 is a deficient number, since it is larger than the sum of its proper divisors (66123585).

102070287 is a wasteful number, since it uses less digits than its factorization.

102070287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 102070287 is about 10102.9840641268. The cubic root of 102070287 is about 467.3401697522.

The spelling of 102070287 in words is "one hundred two million, seventy thousand, two hundred eighty-seven".