998740215 has 48 divisors (see below), whose sum is σ = 1924210080. Its totient is φ = 475088640.

The previous prime is 998740213. The next prime is 998740261. The reversal of 998740215 is 512047899.

It is not a de Polignac number, because 998740215 - 2¹ = 998740213 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998740213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7201 + ... + 45269.

It is an arithmetic number, because the mean of its divisors is an integer number (40087710).

Almost surely, 2^998740215 is an apocalyptic number.

998740215 is a deficient number, since it is larger than the sum of its proper divisors (925469865).

998740215 is a wasteful number, since it uses less digits than its factorization.

998740215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38144 (or 38141 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 998740215 is about 31602.8513745200. The cubic root of 998740215 is about 999.5798952033.

The spelling of 998740215 in words is "nine hundred ninety-eight million, seven hundred forty thousand, two hundred fifteen".