101871440 has 40 divisors (see below), whose sum is σ = 258385248. Its totient is φ = 37043840.

The previous prime is 101871431. The next prime is 101871457. The reversal of 101871440 is 44178101.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57002 + ... + 58761.

Almost surely, 2^101871440 is an apocalyptic number.

101871440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101871440 is an abundant number, since it is smaller than the sum of its proper divisors (156513808).

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

101871440 is a wasteful number, since it uses less digits than its factorization.

101871440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115787 (or 115781 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 101871440 is about 10093.1382631964. The cubic root of 101871440 is about 467.0364914238.

The spelling of 101871440 in words is "one hundred one million, eight hundred seventy-one thousand, four hundred forty".