20408010 has 48 divisors (see below), whose sum is σ = 56979936. Its totient is φ = 4664352.

The previous prime is 20407997. The next prime is 20408029. The reversal of 20408010 is 1080402.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5472 + ... + 8411.

It is an arithmetic number, because the mean of its divisors is an integer number (1187082).

Almost surely, 2^20408010 is an apocalyptic number.

20408010 is an abundant number, since it is smaller than the sum of its proper divisors (36571926).

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

20408010 is a wasteful number, since it uses less digits than its factorization.

20408010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13907 (or 13900 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 20408010 is about 4517.5225511335. The cubic root of 20408010 is about 273.2751991509.

Adding to 20408010 its reverse (1080402), we get a palindrome (21488412).

The spelling of 20408010 in words is "twenty million, four hundred eight thousand, ten".