101638252 has 12 divisors (see below), whose sum is σ = 181651680. Its totient is φ = 49737776.

The previous prime is 101638247. The next prime is 101638253. The reversal of 101638252 is 252836101.

It is a self number, because there is not a number n which added to its sum of digits gives 101638252.

It is not an unprimeable number, because it can be changed into a prime (101638253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270127 + ... + 270502.

It is an arithmetic number, because the mean of its divisors is an integer number (15137640).

Almost surely, 2^101638252 is an apocalyptic number.

It is an amenable number.

101638252 is a deficient number, since it is larger than the sum of its proper divisors (80013428).

101638252 is a wasteful number, since it uses less digits than its factorization.

101638252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540680 (or 540678 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 101638252 is about 10081.5798365137. The cubic root of 101638252 is about 466.6798637991.

The spelling of 101638252 in words is "one hundred one million, six hundred thirty-eight thousand, two hundred fifty-two".