20245401 has 24 divisors (see below), whose sum is σ = 32769984. Its totient is φ = 11936160.

The previous prime is 20245399. The next prime is 20245411. The reversal of 20245401 is 10454202.

20245401 is a `hidden beast` number, since 20 + 245 + 401 = 666.

It is not a de Polignac number, because 20245401 - 2¹ = 20245399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20245411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 900 + ... + 6426.

It is an arithmetic number, because the mean of its divisors is an integer number (1365416).

Almost surely, 2^20245401 is an apocalyptic number.

It is an amenable number.

20245401 is a deficient number, since it is larger than the sum of its proper divisors (12524583).

20245401 is a wasteful number, since it uses less digits than its factorization.

20245401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5581 (or 5578 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 20245401 is about 4499.4889709833. The cubic root of 20245401 is about 272.5474529487.

Adding to 20245401 its reverse (10454202), we get a palindrome (30699603).

The spelling of 20245401 in words is "twenty million, two hundred forty-five thousand, four hundred one".