101970840 has 64 divisors (see below), whose sum is σ = 308367360. Its totient is φ = 26974080.

The previous prime is 101970809. The next prime is 101970857. The reversal of 101970840 is 48079101.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 101970798 and 101970807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11895 + ... + 18585.

It is an arithmetic number, because the mean of its divisors is an integer number (4818240).

Almost surely, 2^101970840 is an apocalyptic number.

101970840 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 101970840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154183680).

101970840 is an abundant number, since it is smaller than the sum of its proper divisors (206396520).

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

101970840 is a wasteful number, since it uses less digits than its factorization.

101970840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6832 (or 6828 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 101970840 is about 10098.0612000522. The cubic root of 101970840 is about 467.1883440476.

The spelling of 101970840 in words is "one hundred one million, nine hundred seventy thousand, eight hundred forty".