101649000 has 128 divisors (see below), whose sum is σ = 327674880. Its totient is φ = 26208000.

The previous prime is 101648999. The next prime is 101649013. The reversal of 101649000 is 946101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92454 + ... + 93546.

It is an arithmetic number, because the mean of its divisors is an integer number (2559960).

Almost surely, 2^101649000 is an apocalyptic number.

101649000 is a gapful number since it is divisible by the number (10) 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 101649000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163837440).

101649000 is an abundant number, since it is smaller than the sum of its proper divisors (226025880).

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

101649000 is a wasteful number, since it uses less digits than its factorization.

101649000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148 (or 1134 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 101649000 is about 10082.1128737978. The cubic root of 101649000 is about 466.6963133093.

The spelling of 101649000 in words is "one hundred one million, six hundred forty-nine thousand".