102156236 has 48 divisors (see below), whose sum is σ = 231624960. Its totient is φ = 38283840.

The previous prime is 102156233. The next prime is 102156259. The reversal of 102156236 is 632651201.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (102156233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 470 + ... + 14301.

It is an arithmetic number, because the mean of its divisors is an integer number (4825520).

Almost surely, 2^102156236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102156236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115812480).

102156236 is an abundant number, since it is smaller than the sum of its proper divisors (129468724).

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

102156236 is a wasteful number, since it uses less digits than its factorization.

102156236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14814 (or 14812 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 102156236 is about 10107.2368132937. The cubic root of 102156236 is about 467.4713086379.

The spelling of 102156236 in words is "one hundred two million, one hundred fifty-six thousand, two hundred thirty-six".