71407944 has 24 divisors (see below), whose sum is σ = 193396710. Its totient is φ = 23802624.

The previous prime is 71407927. The next prime is 71407951. The reversal of 71407944 is 44970417.

It can be written as a sum of positive squares in only one way, i.e., 54908100 + 16499844 = 7410^2 + 4062^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a junction number, because it is equal to n+sod(n) for n = 71407899 and 71407908.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 495817 + ... + 495960.

Almost surely, 2^71407944 is an apocalyptic number.

It is an amenable number.

71407944 is an abundant number, since it is smaller than the sum of its proper divisors (121988766).

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

71407944 is a wasteful number, since it uses less digits than its factorization.

71407944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991789 (or 991782 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 71407944 is about 8450.3221240376. The cubic root of 71407944 is about 414.8733227335.

The spelling of 71407944 in words is "seventy-one million, four hundred seven thousand, nine hundred forty-four".