74931480 has 192 divisors, whose sum is σ = 272432160. Its totient is φ = 18413568.

The previous prime is 74931473. The next prime is 74931481. The reversal of 74931480 is 8413947.

It is a happy number.

It is a super-2 number, since 2×74931480² = 11229453389980800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74931481) 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, 126064 + ... + 126656.

Almost surely, 2^74931480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74931480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136216080).

74931480 is an abundant number, since it is smaller than the sum of its proper divisors (197500680).

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

74931480 is a wasteful number, since it uses less digits than its factorization.

74931480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 74931480 is about 8656.2971298356. The cubic root of 74931480 is about 421.5878668403.

The spelling of 74931480 in words is "seventy-four million, nine hundred thirty-one thousand, four hundred eighty".