20240464 has 10 divisors (see below), whose sum is σ = 39215930. Its totient is φ = 10120224.

The previous prime is 20240459. The next prime is 20240531. The reversal of 20240464 is 46404202.

It can be written as a sum of positive squares in only one way, i.e., 19430464 + 810000 = 4408^2 + 900^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632499 + ... + 632530.

It is an arithmetic number, because the mean of its divisors is an integer number (3921593).

Almost surely, 2^20240464 is an apocalyptic number.

It is an amenable number.

20240464 is a deficient number, since it is larger than the sum of its proper divisors (18975466).

20240464 is a wasteful number, since it uses less digits than its factorization.

20240464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265037 (or 1265031 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 20240464 is about 4498.9403196753. The cubic root of 20240464 is about 272.5252968688.

Adding to 20240464 its reverse (46404202), we get a palindrome (66644666).

The spelling of 20240464 in words is "twenty million, two hundred forty thousand, four hundred sixty-four".