206897152 has 136 divisors (see below), whose sum is σ = 528478272. Its totient is φ = 78643200.

The previous prime is 206897113. The next prime is 206897161. The reversal of 206897152 is 251798602.

It is a super-2 number, since 2×206897152² = 85612863011422208, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5046252 + ... + 5046292.

Almost surely, 2^206897152 is an apocalyptic number.

206897152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206897152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264239136).

206897152 is an abundant number, since it is smaller than the sum of its proper divisors (321581120).

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

206897152 is an frugal number, since it uses more digits than its factorization.

206897152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 206897152 is about 14383.9199107893. The cubic root of 206897152 is about 591.4501834564.

The spelling of 206897152 in words is "two hundred six million, eight hundred ninety-seven thousand, one hundred fifty-two".