101780252 has 18 divisors (see below), whose sum is σ = 207195912. Its totient is φ = 43620024.

The previous prime is 101780233. The next prime is 101780279. The reversal of 101780252 is 252087101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 259448 + ... + 259839.

It is an arithmetic number, because the mean of its divisors is an integer number (11510884).

Almost surely, 2^101780252 is an apocalyptic number.

It is an amenable number.

101780252 is an abundant number, since it is smaller than the sum of its proper divisors (105415660).

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

101780252 is a wasteful number, since it uses less digits than its factorization.

101780252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519305 (or 519296 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 101780252 is about 10088.6199254407. The cubic root of 101780252 is about 466.8970973104.

The spelling of 101780252 in words is "one hundred one million, seven hundred eighty thousand, two hundred fifty-two".