20463730 has 32 divisors (see below), whose sum is σ = 42286464. Its totient is φ = 6984576.

The previous prime is 20463683. The next prime is 20463739. The reversal of 20463730 is 3736402.

It is a junction number, because it is equal to n+sod(n) for n = 20463695 and 20463704.

It is not an unprimeable number, because it can be changed into a prime (20463739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19294 + ... + 20326.

It is an arithmetic number, because the mean of its divisors is an integer number (1321452).

Almost surely, 2^20463730 is an apocalyptic number.

20463730 is an abundant number, since it is smaller than the sum of its proper divisors (21822734).

20463730 is a wasteful number, since it uses less digits than its factorization.

20463730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 20463730 is about 4523.6854444137. The cubic root of 20463730 is about 273.5236809493.

It can be divided in two parts, 2046 and 3730, that added together give a square (5776 = 76²).

The spelling of 20463730 in words is "twenty million, four hundred sixty-three thousand, seven hundred thirty".