71949400 has 24 divisors (see below), whose sum is σ = 167282820. Its totient is φ = 28779680.

The previous prime is 71949343. The next prime is 71949403. The reversal of 71949400 is 494917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71949403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 179674 + ... + 180073.

Almost surely, 2^71949400 is an apocalyptic number.

It is an amenable number.

71949400 is an abundant number, since it is smaller than the sum of its proper divisors (95333420).

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

71949400 is a wasteful number, since it uses less digits than its factorization.

71949400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359763 (or 359754 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 71949400 is about 8482.2992166040. The cubic root of 71949400 is about 415.9192859924.

The spelling of 71949400 in words is "seventy-one million, nine hundred forty-nine thousand, four hundred".