20078430 has 32 divisors (see below), whose sum is σ = 48470400. Its totient is φ = 5322912.

The previous prime is 20078419. The next prime is 20078441. The reversal of 20078430 is 3487002.

It is an interprime number because it is at equal distance from previous prime (20078419) and next prime (20078441).

It is a self number, because there is not a number n which added to its sum of digits gives 20078430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3501 + ... + 7239.

It is an arithmetic number, because the mean of its divisors is an integer number (1514700).

Almost surely, 2^20078430 is an apocalyptic number.

20078430 is an abundant number, since it is smaller than the sum of its proper divisors (28391970).

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

20078430 is a wasteful number, since it uses less digits than its factorization.

20078430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20078430 is about 4480.8961157340. The cubic root of 20078430 is about 271.7961184817.

The spelling of 20078430 in words is "twenty million, seventy-eight thousand, four hundred thirty".