298715040 has 336 divisors, whose sum is σ = 1145262888. Its totient is φ = 73156608.

The previous prime is 298715029. The next prime is 298715057. The reversal of 298715040 is 40517892.

It can be written as a sum of positive squares in 4 ways, for example, as 265950864 + 32764176 = 16308^2 + 5724^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 298714986 and 298715004.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1516222 + ... + 1516418.

Almost surely, 2^298715040 is an apocalyptic number.

298715040 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 298715040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (572631444).

298715040 is an abundant number, since it is smaller than the sum of its proper divisors (846547848).

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

298715040 is a wasteful number, since it uses less digits than its factorization.

298715040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 298715040 is about 17283.3746704745. The cubic root of 298715040 is about 668.4758105013.

The spelling of 298715040 in words is "two hundred ninety-eight million, seven hundred fifteen thousand, forty".