7421898 has 24 divisors (see below), whose sum is σ = 16317504. Its totient is φ = 2248840.

The previous prime is 7421891. The next prime is 7421923. The reversal of 7421898 is 8981247.

7421898 is nontrivially palindromic in base 5.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7421891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4386 + ... + 5837.

It is an arithmetic number, because the mean of its divisors is an integer number (679896).

Almost surely, 2^7421898 is an apocalyptic number.

7421898 is an abundant number, since it is smaller than the sum of its proper divisors (8895606).

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

7421898 is a wasteful number, since it uses less digits than its factorization.

7421898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10250 (or 10239 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The square root of 7421898 is about 2724.3160609592. The cubic root of 7421898 is about 195.0615453332.

The spelling of 7421898 in words is "seven million, four hundred twenty-one thousand, eight hundred ninety-eight".