20320074 has 24 divisors (see below), whose sum is σ = 44965440. Its totient is φ = 6628968.

The previous prime is 20320073. The next prime is 20320103. The reversal of 20320074 is 47002302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20320073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11164 + ... + 12855.

It is an arithmetic number, because the mean of its divisors is an integer number (1873560).

Almost surely, 2^20320074 is an apocalyptic number.

20320074 is an abundant number, since it is smaller than the sum of its proper divisors (24645366).

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

20320074 is a wasteful number, since it uses less digits than its factorization.

20320074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24074 (or 24071 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 20320074 is about 4507.7792758741. The cubic root of 20320074 is about 272.8821292063.

Adding to 20320074 its reverse (47002302), we get a palindrome (67322376).

The spelling of 20320074 in words is "twenty million, three hundred twenty thousand, seventy-four".