20212074 has 24 divisors (see below), whose sum is σ = 43930692. Its totient is φ = 6716160.

The previous prime is 20212063. The next prime is 20212079. The reversal of 20212074 is 47021202.

It can be written as a sum of positive squares in 2 ways, for example, as 18429849 + 1782225 = 4293^2 + 1335^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20212079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4764 + ... + 7944.

Almost surely, 2^20212074 is an apocalyptic number.

20212074 is an abundant number, since it is smaller than the sum of its proper divisors (23718618).

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

20212074 is a wasteful number, since it uses less digits than its factorization.

20212074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3542 (or 3539 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 20212074 is about 4495.7840250617. The cubic root of 20212074 is about 272.3978193335.

Adding to 20212074 its reverse (47021202), we get a palindrome (67233276).

It can be divided in two parts, 2021 and 2074, that added together give a triangular number (4095 = T₉₀).

The spelling of 20212074 in words is "twenty million, two hundred twelve thousand, seventy-four".