215070102 has 96 divisors (see below), whose sum is σ = 530712000. Its totient is φ = 62447616.

The previous prime is 215070083. The next prime is 215070109. The reversal of 215070102 is 201070512.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215070109) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 478774 + ... + 479222.

It is an arithmetic number, because the mean of its divisors is an integer number (5528250).

Almost surely, 2^215070102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215070102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265356000).

215070102 is an abundant number, since it is smaller than the sum of its proper divisors (315641898).

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

215070102 is a wasteful number, since it uses less digits than its factorization.

215070102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 215070102 is about 14665.2685621505. The cubic root of 215070102 is about 599.1377447868.

The spelling of 215070102 in words is "two hundred fifteen million, seventy thousand, one hundred two".