101447640 has 336 divisors, whose sum is σ = 403710480. Its totient is φ = 22861440.

The previous prime is 101447639. The next prime is 101447677. The reversal of 101447640 is 46744101.

101447640 is a `hidden beast` number, since 1 + 0 + 14 + 4 + 7 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 1428805 + ... + 1428875.

Almost surely, 2^101447640 is an apocalyptic number.

101447640 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 101447640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201855240).

101447640 is an abundant number, since it is smaller than the sum of its proper divisors (302262840).

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

101447640 is an equidigital number, since it uses as much as digits as its factorization.

101447640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 101447640 is about 10072.1219214225. The cubic root of 101447640 is about 466.3879446744.

The spelling of 101447640 in words is "one hundred one million, four hundred forty-seven thousand, six hundred forty".