20407074 has 16 divisors (see below), whose sum is σ = 41044320. Its totient is φ = 6764000.

The previous prime is 20407031. The next prime is 20407099. The reversal of 20407074 is 47070402.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8427 + ... + 10574.

It is an arithmetic number, because the mean of its divisors is an integer number (2565270).

Almost surely, 2^20407074 is an apocalyptic number.

20407074 is an abundant number, since it is smaller than the sum of its proper divisors (20637246).

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

20407074 is a wasteful number, since it uses less digits than its factorization.

20407074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19185.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 20407074 is about 4517.4189533405. The cubic root of 20407074 is about 273.2710212244.

Adding to 20407074 its reverse (47070402), we get a palindrome (67477476).

The spelling of 20407074 in words is "twenty million, four hundred seven thousand, seventy-four".