20702152 has 16 divisors (see below), whose sum is σ = 39174300. Its totient is φ = 10255680.

The previous prime is 20702147. The next prime is 20702161. The reversal of 20702152 is 25120702.

It can be written as a sum of positive squares in 2 ways, for example, as 16597476 + 4104676 = 4074^2 + 2026^2 .

It is a super-2 number, since 2×20702152² = 857158194862208, which contains 22 as substring.

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, 10999 + ... + 12742.

Almost surely, 2^20702152 is an apocalyptic number.

It is an amenable number.

20702152 is a deficient number, since it is larger than the sum of its proper divisors (18472148).

20702152 is a wasteful number, since it uses less digits than its factorization.

20702152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23856 (or 23852 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 20702152 is about 4549.9617580811. The cubic root of 20702152 is about 274.5818526686.

Adding to 20702152 its reverse (25120702), we get a palindrome (45822854).

The spelling of 20702152 in words is "twenty million, seven hundred two thousand, one hundred fifty-two".