74340020 has 24 divisors (see below), whose sum is σ = 156345504. Its totient is φ = 29691936.

The previous prime is 74340001. The next prime is 74340023. The reversal of 74340020 is 2004347.

It is a happy number.

74340020 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

74340020 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 74339974 and 74340001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74340023) 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, 13379 + ... + 18101.

It is an arithmetic number, because the mean of its divisors is an integer number (6514396).

Almost surely, 2^74340020 is an apocalyptic number.

It is an amenable number.

74340020 is an abundant number, since it is smaller than the sum of its proper divisors (82005484).

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

74340020 is a wasteful number, since it uses less digits than its factorization.

74340020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5519 (or 5517 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 74340020 is about 8622.0658777349. The cubic root of 74340020 is about 420.4756893030.

Adding to 74340020 its reverse (2004347), we get a palindrome (76344367).

The spelling of 74340020 in words is "seventy-four million, three hundred forty thousand, twenty".