20029420 has 24 divisors (see below), whose sum is σ = 44276400. Its totient is φ = 7589952.

The previous prime is 20029403. The next prime is 20029453. The reversal of 20029420 is 2492002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 25975 + ... + 26734.

It is an arithmetic number, because the mean of its divisors is an integer number (1844850).

Almost surely, 2^20029420 is an apocalyptic number.

20029420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20029420 is an abundant number, since it is smaller than the sum of its proper divisors (24246980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20029420 is a wasteful number, since it uses less digits than its factorization.

20029420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52737 (or 52735 counting only the distinct ones).

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

The square root of 20029420 is about 4475.4240022595. The cubic root of 20029420 is about 271.5747933947.

It can be divided in two parts, 20029 and 420, that added together give a square (20449 = 143²).

The spelling of 20029420 in words is "twenty million, twenty-nine thousand, four hundred twenty".