71624380 has 12 divisors (see below), whose sum is σ = 150411240. Its totient is φ = 28649744.

The previous prime is 71624347. The next prime is 71624387. The reversal of 71624380 is 8342617.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71624387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1790590 + ... + 1790629.

It is an arithmetic number, because the mean of its divisors is an integer number (12534270).

Almost surely, 2^71624380 is an apocalyptic number.

It is an amenable number.

71624380 is an abundant number, since it is smaller than the sum of its proper divisors (78786860).

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

71624380 is a wasteful number, since it uses less digits than its factorization.

71624380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581228 (or 3581226 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 71624380 is about 8463.1188104623. The cubic root of 71624380 is about 415.2920574435.

Adding to 71624380 its reverse (8342617), we get a palindrome (79966997).

The spelling of 71624380 in words is "seventy-one million, six hundred twenty-four thousand, three hundred eighty".