20673471 has 32 divisors (see below), whose sum is σ = 34771968. Its totient is φ = 10632960.

The previous prime is 20673469. The next prime is 20673487. The reversal of 20673471 is 17437602.

It is not a de Polignac number, because 20673471 - 2¹ = 20673469 is a prime.

It is a super-3 number, since 3×20673471³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20673461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10270 + ... + 12116.

It is an arithmetic number, because the mean of its divisors is an integer number (1086624).

Almost surely, 2^20673471 is an apocalyptic number.

20673471 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20673471 is a deficient number, since it is larger than the sum of its proper divisors (14098497).

20673471 is a wasteful number, since it uses less digits than its factorization.

20673471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 20673471 is about 4546.8088809626. The cubic root of 20673471 is about 274.4549911108.

The spelling of 20673471 in words is "twenty million, six hundred seventy-three thousand, four hundred seventy-one".