101440590 has 32 divisors (see below), whose sum is σ = 243755136. Its totient is φ = 27017760.

The previous prime is 101440583. The next prime is 101440597. The reversal of 101440590 is 95044101.

It is an interprime number because it is at equal distance from previous prime (101440583) and next prime (101440597).

It is a self number, because there is not a number n which added to its sum of digits gives 101440590.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101440597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32185 + ... + 35195.

It is an arithmetic number, because the mean of its divisors is an integer number (7617348).

Almost surely, 2^101440590 is an apocalyptic number.

101440590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101440590 is an abundant number, since it is smaller than the sum of its proper divisors (142314546).

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

101440590 is a wasteful number, since it uses less digits than its factorization.

101440590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4144.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 101440590 is about 10071.7719394355. The cubic root of 101440590 is about 466.3771407063.

Adding to 101440590 its reverse (95044101), we get a palindrome (196484691).

The spelling of 101440590 in words is "one hundred one million, four hundred forty thousand, five hundred ninety".