73671380 has 12 divisors (see below), whose sum is σ = 154709940. Its totient is φ = 29468544.

The previous prime is 73671373. The next prime is 73671443. The reversal of 73671380 is 8317637.

It can be written as a sum of positive squares in 2 ways, for example, as 47087044 + 26584336 = 6862^2 + 5156^2 .

It is a super-2 number, since 2×73671380² = 10854944462208800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 73671380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1841765 + ... + 1841804.

It is an arithmetic number, because the mean of its divisors is an integer number (12892495).

Almost surely, 2^73671380 is an apocalyptic number.

It is an amenable number.

73671380 is an abundant number, since it is smaller than the sum of its proper divisors (81038560).

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

73671380 is a wasteful number, since it uses less digits than its factorization.

73671380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683578 (or 3683576 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 73671380 is about 8583.2033647118. The cubic root of 73671380 is about 419.2112559013.

The spelling of 73671380 in words is "seventy-three million, six hundred seventy-one thousand, three hundred eighty".