74144020 has 24 divisors (see below), whose sum is σ = 156739968. Its totient is φ = 29460000.

The previous prime is 74144011. The next prime is 74144029. The reversal of 74144020 is 2044147.

It is an interprime number because it is at equal distance from previous prime (74144011) and next prime (74144029).

It is a junction number, because it is equal to n+sod(n) for n = 74143982 and 74144000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74144029) 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, 9256 + ... + 15295.

It is an arithmetic number, because the mean of its divisors is an integer number (6530832).

Almost surely, 2^74144020 is an apocalyptic number.

It is an amenable number.

74144020 is an abundant number, since it is smaller than the sum of its proper divisors (82595948).

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

74144020 is a wasteful number, since it uses less digits than its factorization.

74144020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24711 (or 24709 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 74144020 is about 8610.6921905268. The cubic root of 74144020 is about 420.1058312292.

Adding to 74144020 its reverse (2044147), we get a palindrome (76188167).

The spelling of 74144020 in words is "seventy-four million, one hundred forty-four thousand, twenty".