20190516 has 12 divisors (see below), whose sum is σ = 47111232. Its totient is φ = 6730168.

The previous prime is 20190487. The next prime is 20190523. The reversal of 20190516 is 61509102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841260 + ... + 841283.

It is an arithmetic number, because the mean of its divisors is an integer number (3925936).

Almost surely, 2^20190516 is an apocalyptic number.

It is an amenable number.

20190516 is an abundant number, since it is smaller than the sum of its proper divisors (26920716).

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

20190516 is a wasteful number, since it uses less digits than its factorization.

20190516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682550 (or 1682548 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 20190516 is about 4493.3858058262. The cubic root of 20190516 is about 272.3009392669.

Adding to 20190516 its reverse (61509102), we get a palindrome (81699618).

It can be divided in two parts, 20190 and 516, that added together give a triangular number (20706 = T₂₀₃).

The spelling of 20190516 in words is "twenty million, one hundred ninety thousand, five hundred sixteen".