20420376 has 16 divisors (see below), whose sum is σ = 51051000. Its totient is φ = 6806784.

The previous prime is 20420371. The next prime is 20420377. The reversal of 20420376 is 67302402.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 850849 = 20420376 / (2 + 0 + 4 + 2 + 0 + 3 + 7 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20420371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425401 + ... + 425448.

Almost surely, 2^20420376 is an apocalyptic number.

It is an amenable number.

20420376 is an abundant number, since it is smaller than the sum of its proper divisors (30630624).

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

20420376 is a wasteful number, since it uses less digits than its factorization.

20420376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850858 (or 850854 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 20420376 is about 4518.8910143972. The cubic root of 20420376 is about 273.3303839988.

Adding to 20420376 its reverse (67302402), we get a palindrome (87722778).

The spelling of 20420376 in words is "twenty million, four hundred twenty thousand, three hundred seventy-six".