297828900 has 180 divisors, whose sum is σ = 979281072. Its totient is φ = 78287040.

The previous prime is 297828859. The next prime is 297828907. The reversal of 297828900 is 9828792.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (297828907) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 672079 + ... + 672521.

Almost surely, 2^297828900 is an apocalyptic number.

297828900 is a gapful number since it is divisible by the number (20) 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 297828900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489640536).

297828900 is an abundant number, since it is smaller than the sum of its proper divisors (681452172).

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

297828900 is a wasteful number, since it uses less digits than its factorization.

297828900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 297828900 is about 17257.7200116354. The cubic root of 297828900 is about 667.8141432575.

It can be divided in two parts, 2978 and 28900, that added together give a triangular number (31878 = T₂₅₂).

The spelling of 297828900 in words is "two hundred ninety-seven million, eight hundred twenty-eight thousand, nine hundred".