20750464 has 32 divisors (see below), whose sum is σ = 47246400. Its totient is φ = 8892672.

The previous prime is 20750461. The next prime is 20750473. The reversal of 20750464 is 46405702.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (20750461) 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, 10684 + ... + 12475.

It is an arithmetic number, because the mean of its divisors is an integer number (1476450).

Almost surely, 2^20750464 is an apocalyptic number.

It is an amenable number.

20750464 is an abundant number, since it is smaller than the sum of its proper divisors (26495936).

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

20750464 is an equidigital number, since it uses as much as digits as its factorization.

20750464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23180 (or 23168 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 20750464 is about 4555.2677199041. The cubic root of 20750464 is about 274.7952812475.

The spelling of 20750464 in words is "twenty million, seven hundred fifty thousand, four hundred sixty-four".