74486490 has 128 divisors (see below), whose sum is σ = 203986944. Its totient is φ = 17280000.

The previous prime is 74486473. The next prime is 74486491. The reversal of 74486490 is 9468447.

It is not an unprimeable number, because it can be changed into a prime (74486491) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 737440 + ... + 737540.

It is an arithmetic number, because the mean of its divisors is an integer number (1593648).

Almost surely, 2^74486490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74486490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101993472).

74486490 is an abundant number, since it is smaller than the sum of its proper divisors (129500454).

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

74486490 is a wasteful number, since it uses less digits than its factorization.

74486490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 74486490 is about 8630.5556020456. Note that the first 3 decimals coincide. The cubic root of 74486490 is about 420.7516585171.

The spelling of 74486490 in words is "seventy-four million, four hundred eighty-six thousand, four hundred ninety".