74020730 has 32 divisors (see below), whose sum is σ = 152876160. Its totient is φ = 25277760.

The previous prime is 74020691. The next prime is 74020741. The reversal of 74020730 is 3702047.

It is a junction number, because it is equal to n+sod(n) for n = 74020696 and 74020705.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16865 + ... + 20795.

It is an arithmetic number, because the mean of its divisors is an integer number (4777380).

Almost surely, 2^74020730 is an apocalyptic number.

74020730 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

74020730 is an abundant number, since it is smaller than the sum of its proper divisors (78855430).

74020730 is a wasteful number, since it uses less digits than its factorization.

74020730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4214.

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 74020730 is about 8603.5300894458. The cubic root of 74020730 is about 419.8728451057.

Adding to 74020730 its reverse (3702047), we get a palindrome (77722777).

The spelling of 74020730 in words is "seventy-four million, twenty thousand, seven hundred thirty".