20190412 has 48 divisors (see below), whose sum is σ = 40932864. Its totient is φ = 8624000.

The previous prime is 20190371. The next prime is 20190421. The reversal of 20190412 is 21409102.

It is a self number, because there is not a number n which added to its sum of digits gives 20190412.

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, 71712 + ... + 71992.

It is an arithmetic number, because the mean of its divisors is an integer number (852768).

Almost surely, 2^20190412 is an apocalyptic number.

20190412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20190412 is an abundant number, since it is smaller than the sum of its proper divisors (20742452).

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

20190412 is a wasteful number, since it uses less digits than its factorization.

20190412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 20190412 is about 4493.3742332461. The cubic root of 20190412 is about 272.3004717314.

Adding to 20190412 its reverse (21409102), we get a palindrome (41599514).

It can be divided in two parts, 20190 and 412, that added together give a palindrome (20602).

The spelling of 20190412 in words is "twenty million, one hundred ninety thousand, four hundred twelve".