7898490 has 96 divisors (see below), whose sum is σ = 22464000. Its totient is φ = 1918080.

The previous prime is 7898479. The next prime is 7898519. The reversal of 7898490 is 948987.

7898490 is a `hidden beast` number, since 78 + 98 + 490 = 666.

It is a super-2 number, since 2×7898490² = 124772288560200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52936 + ... + 53084.

It is an arithmetic number, because the mean of its divisors is an integer number (234000).

Almost surely, 2^7898490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7898490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11232000).

7898490 is an abundant number, since it is smaller than the sum of its proper divisors (14565510).

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

7898490 is a wasteful number, since it uses less digits than its factorization.

7898490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 7898490 is about 2810.4252347287. The cubic root of 7898490 is about 199.1504800214.

The spelling of 7898490 in words is "seven million, eight hundred ninety-eight thousand, four hundred ninety".