20451468 has 12 divisors (see below), whose sum is σ = 47720120. Its totient is φ = 6817152.

The previous prime is 20451463. The next prime is 20451511. The reversal of 20451468 is 86415402.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20451463) 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, 852133 + ... + 852156.

Almost surely, 2^20451468 is an apocalyptic number.

It is an amenable number.

20451468 is an abundant number, since it is smaller than the sum of its proper divisors (27268652).

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

20451468 is a wasteful number, since it uses less digits than its factorization.

20451468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704296 (or 1704294 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 20451468 is about 4522.3299304673. The cubic root of 20451468 is about 273.4690376446.

The spelling of 20451468 in words is "twenty million, four hundred fifty-one thousand, four hundred sixty-eight".