101139472 has 40 divisors (see below), whose sum is σ = 231681600. Its totient is φ = 41849472.

The previous prime is 101139461. The next prime is 101139491. The reversal of 101139472 is 274931101.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 101139472.

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, 12322 + ... + 18817.

It is an arithmetic number, because the mean of its divisors is an integer number (5792040).

Almost surely, 2^101139472 is an apocalyptic number.

It is an amenable number.

101139472 is an abundant number, since it is smaller than the sum of its proper divisors (130542128).

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

101139472 is a wasteful number, since it uses less digits than its factorization.

101139472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31183 (or 31177 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 101139472 is about 10056.8122185909. The cubic root of 101139472 is about 465.9152160219.

The spelling of 101139472 in words is "one hundred one million, one hundred thirty-nine thousand, four hundred seventy-two".