297669420 has 72 divisors (see below), whose sum is σ = 905211216. Its totient is φ = 79178112.

The previous prime is 297669419. The next prime is 297669433. The reversal of 297669420 is 24966792.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77874 + ... + 81606.

It is an arithmetic number, because the mean of its divisors is an integer number (12572378).

Almost surely, 2^297669420 is an apocalyptic number.

297669420 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 297669420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452605608).

297669420 is an abundant number, since it is smaller than the sum of its proper divisors (607541796).

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

297669420 is a wasteful number, since it uses less digits than its factorization.

297669420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4191 (or 4186 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 297669420 is about 17253.0988520903. The cubic root of 297669420 is about 667.6949226635.

The spelling of 297669420 in words is "two hundred ninety-seven million, six hundred sixty-nine thousand, four hundred twenty".