20402414 has 8 divisors (see below), whose sum is σ = 32403888. Its totient is φ = 9601120.

The previous prime is 20402411. The next prime is 20402419. The reversal of 20402414 is 41420402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 20402392 and 20402401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300002 + ... + 300069.

It is an arithmetic number, because the mean of its divisors is an integer number (4050486).

Almost surely, 2^20402414 is an apocalyptic number.

20402414 is a deficient number, since it is larger than the sum of its proper divisors (12001474).

20402414 is a wasteful number, since it uses less digits than its factorization.

20402414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600090.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 20402414 is about 4516.9031426410. The cubic root of 20402414 is about 273.2502189623.

Adding to 20402414 its reverse (41420402), we get a palindrome (61822816).

The spelling of 20402414 in words is "twenty million, four hundred two thousand, four hundred fourteen".