20429002 has 16 divisors (see below), whose sum is σ = 35396352. Its totient is φ = 8739520.

The previous prime is 20428987. The next prime is 20429011. The reversal of 20429002 is 20092402.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26938 + ... + 27685.

It is an arithmetic number, because the mean of its divisors is an integer number (2212272).

Almost surely, 2^20429002 is an apocalyptic number.

20429002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20429002 is a deficient number, since it is larger than the sum of its proper divisors (14967350).

20429002 is a wasteful number, since it uses less digits than its factorization.

20429002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54653.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20429002 is about 4519.8453513367. The cubic root of 20429002 is about 273.3688654317.

The spelling of 20429002 in words is "twenty million, four hundred twenty-nine thousand, two".