20537002 has 4 divisors (see below), whose sum is σ = 30805506. Its totient is φ = 10268500.

The previous prime is 20536993. The next prime is 20537009. The reversal of 20537002 is 20073502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15832441 + 4704561 = 3979^2 + 2169^2 .

It is a super-2 number, since 2×20537002² = 843536902296008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20537009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5134249 + ... + 5134252.

Almost surely, 2^20537002 is an apocalyptic number.

20537002 is a deficient number, since it is larger than the sum of its proper divisors (10268504).

20537002 is a wasteful number, since it uses less digits than its factorization.

20537002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10268503.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 20537002 is about 4531.7769141916. The cubic root of 20537002 is about 273.8497497942.

The spelling of 20537002 in words is "twenty million, five hundred thirty-seven thousand, two".