298649890 has 32 divisors (see below), whose sum is σ = 670218624. Its totient is φ = 93085440.

The previous prime is 298649873. The next prime is 298649951. The reversal of 298649890 is 98946892.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193159 + ... + 194698.

It is an arithmetic number, because the mean of its divisors is an integer number (20944332).

Almost surely, 2^298649890 is an apocalyptic number.

298649890 is an abundant number, since it is smaller than the sum of its proper divisors (371568734).

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

298649890 is a wasteful number, since it uses less digits than its factorization.

298649890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387882.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The square root of 298649890 is about 17281.4898084627. The cubic root of 298649890 is about 668.4272085900.

The spelling of 298649890 in words is "two hundred ninety-eight million, six hundred forty-nine thousand, eight hundred ninety".