101499840 has 168 divisors, whose sum is σ = 376111008. Its totient is φ = 24975360.

The previous prime is 101499833. The next prime is 101499847. The reversal of 101499840 is 48994101.

It is an interprime number because it is at equal distance from previous prime (101499833) and next prime (101499847).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 101499795 and 101499804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101499847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36085 + ... + 38795.

It is an arithmetic number, because the mean of its divisors is an integer number (2238756).

Almost surely, 2^101499840 is an apocalyptic number.

101499840 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 101499840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188055504).

101499840 is an abundant number, since it is smaller than the sum of its proper divisors (274611168).

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

101499840 is a wasteful number, since it uses less digits than its factorization.

101499840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747 (or 2734 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 101499840 is about 10074.7128991351. The cubic root of 101499840 is about 466.4679244427.

The spelling of 101499840 in words is "one hundred one million, four hundred ninety-nine thousand, eight hundred forty".