20412019 has 8 divisors (see below), whose sum is σ = 21936528. Its totient is φ = 18923520.

The previous prime is 20411983. The next prime is 20412037. The reversal of 20412019 is 91021402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20412019 - 2¹⁵ = 20379251 is a prime.

It is a super-2 number, since 2×20412019² = 833301039312722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20411987 and 20412005.

It is not an unprimeable number, because it can be changed into a prime (20412079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7822 + ... + 10099.

It is an arithmetic number, because the mean of its divisors is an integer number (2742066).

Almost surely, 2^20412019 is an apocalyptic number.

20412019 is a deficient number, since it is larger than the sum of its proper divisors (1524509).

20412019 is a wasteful number, since it uses less digits than its factorization.

20412019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18005.

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

The square root of 20412019 is about 4517.9662460005. The cubic root of 20412019 is about 273.2930922648.

It can be divided in two parts, 2041201 and 9, that added together give a triangular number (2041210 = T₂₀₂₀).

The spelling of 20412019 in words is "twenty million, four hundred twelve thousand, nineteen".