101649912 has 192 divisors, whose sum is σ = 326541600. Its totient is φ = 26127360.

The previous prime is 101649887. The next prime is 101649913. The reversal of 101649912 is 219946101.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101649913) 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, 932514 + ... + 932622.

Almost surely, 2^101649912 is an apocalyptic number.

101649912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101649912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163270800).

101649912 is an abundant number, since it is smaller than the sum of its proper divisors (224891688).

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

101649912 is a wasteful number, since it uses less digits than its factorization.

101649912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 101649912 is about 10082.1581023112. The cubic root of 101649912 is about 466.6977090461.

The spelling of 101649912 in words is "one hundred one million, six hundred forty-nine thousand, nine hundred twelve".