20573442 has 12 divisors (see below), whose sum is σ = 44575830. Its totient is φ = 6857808.

The previous prime is 20573411. The next prime is 20573453. The reversal of 20573442 is 24437502.

It can be written as a sum of positive squares in only one way, i.e., 15139881 + 5433561 = 3891^2 + 2331^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 571467 + ... + 571502.

Almost surely, 2^20573442 is an apocalyptic number.

20573442 is an abundant number, since it is smaller than the sum of its proper divisors (24002388).

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

20573442 is a wasteful number, since it uses less digits than its factorization.

20573442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142977 (or 1142974 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 20573442 is about 4535.7956303167. The cubic root of 20573442 is about 274.0116232837.

The spelling of 20573442 in words is "twenty million, five hundred seventy-three thousand, four hundred forty-two".