71019450 has 96 divisors (see below), whose sum is σ = 202129920. Its totient is φ = 18316800.

The previous prime is 71019439. The next prime is 71019451. The reversal of 71019450 is 5491017.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (71019451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41002 + ... + 42698.

It is an arithmetic number, because the mean of its divisors is an integer number (2105520).

Almost surely, 2^71019450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71019450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101064960).

71019450 is an abundant number, since it is smaller than the sum of its proper divisors (131110470).

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

71019450 is a wasteful number, since it uses less digits than its factorization.

71019450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749 (or 1738 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 71019450 is about 8427.3038393071. The cubic root of 71019450 is about 414.1195831826.

The spelling of 71019450 in words is "seventy-one million, nineteen thousand, four hundred fifty".