20214479 has 16 divisors (see below), whose sum is σ = 22381920. Its totient is φ = 18170880.

The previous prime is 20214451. The next prime is 20214497. The reversal of 20214479 is 97441202.

20214479 = T₂ + T₃ + ... + T₄₉₄.

It is a cyclic number.

It is not a de Polignac number, because 20214479 - 2⁸ = 20214223 is a prime.

It is a super-2 number, since 2×20214479² = 817250322482882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20214409) 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, 64427 + ... + 64739.

It is an arithmetic number, because the mean of its divisors is an integer number (1398870).

Almost surely, 2^20214479 is an apocalyptic number.

20214479 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20214479 is a deficient number, since it is larger than the sum of its proper divisors (2167441).

20214479 is a wasteful number, since it uses less digits than its factorization.

20214479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 20214479 is about 4496.0514899187. The cubic root of 20214479 is about 272.4086229547.

The spelling of 20214479 in words is "twenty million, two hundred fourteen thousand, four hundred seventy-nine".