73981480 has 32 divisors (see below), whose sum is σ = 167589000. Its totient is φ = 29391616.

The previous prime is 73981477. The next prime is 73981487. The reversal of 73981480 is 8418937.

It can be written as a sum of positive squares in 4 ways, for example, as 37039396 + 36942084 = 6086^2 + 6078^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (73981487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247 + ... + 12166.

Almost surely, 2^73981480 is an apocalyptic number.

It is an amenable number.

73981480 is an abundant number, since it is smaller than the sum of its proper divisors (93607520).

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

73981480 is a wasteful number, since it uses less digits than its factorization.

73981480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12573 (or 12569 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 73981480 is about 8601.2487465484. The cubic root of 73981480 is about 419.7986184986.

The spelling of 73981480 in words is "seventy-three million, nine hundred eighty-one thousand, four hundred eighty".