101238440 has 16 divisors (see below), whose sum is σ = 227786580. Its totient is φ = 40495360.

The previous prime is 101238413. The next prime is 101238443. The reversal of 101238440 is 44832101.

It can be written as a sum of positive squares in 2 ways, for example, as 101163364 + 75076 = 10058^2 + 274^2 .

It is not an unprimeable number, because it can be changed into a prime (101238443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1265441 + ... + 1265520.

Almost surely, 2^101238440 is an apocalyptic number.

101238440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101238440 is an abundant number, since it is smaller than the sum of its proper divisors (126548140).

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

101238440 is a wasteful number, since it uses less digits than its factorization.

101238440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530972 (or 2530968 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 101238440 is about 10061.7314613341. The cubic root of 101238440 is about 466.0671371401.

The spelling of 101238440 in words is "one hundred one million, two hundred thirty-eight thousand, four hundred forty".