20190056 has 8 divisors (see below), whose sum is σ = 37856370. Its totient is φ = 10095024.

The previous prime is 20190029. The next prime is 20190097. The reversal of 20190056 is 65009102.

It can be written as a sum of positive squares in only one way, i.e., 14945956 + 5244100 = 3866^2 + 2290^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20190056² = 815276722566272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261871 + ... + 1261886.

Almost surely, 2^20190056 is an apocalyptic number.

It is an amenable number.

20190056 is a deficient number, since it is larger than the sum of its proper divisors (17666314).

20190056 is a wasteful number, since it uses less digits than its factorization.

20190056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523763 (or 2523759 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 20190056 is about 4493.3346191887. The cubic root of 20190056 is about 272.2988713094.

Adding to 20190056 its reverse (65009102), we get a palindrome (85199158).

The spelling of 20190056 in words is "twenty million, one hundred ninety thousand, fifty-six".