1520998 has 4 divisors (see below), whose sum is σ = 2281500. Its totient is φ = 760498.

The previous prime is 1520989. The next prime is 1521011. The reversal of 1520998 is 8990251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8990251 = 97 ⋅92683.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380248 + ... + 380251.

It is an arithmetic number, because the mean of its divisors is an integer number (570375).

2^1520998 is an apocalyptic number.

1520998 is a deficient number, since it is larger than the sum of its proper divisors (760502).

1520998 is an equidigital number, since it uses as much as digits as its factorization.

1520998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760501.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1520998 is about 1233.2874766250. The cubic root of 1520998 is about 115.0031001055.

The spelling of 1520998 in words is "one million, five hundred twenty thousand, nine hundred ninety-eight".