1634490 has 96 divisors (see below), whose sum is σ = 5031936. Its totient is φ = 362880.

The previous prime is 1634489. The next prime is 1634497. The reversal of 1634490 is 944361.

It is not an unprimeable number, because it can be changed into a prime (1634497) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 12807 + ... + 12933.

It is an arithmetic number, because the mean of its divisors is an integer number (52416).

2^1634490 is an apocalyptic number.

1634490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1634490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2515968).

1634490 is an abundant number, since it is smaller than the sum of its proper divisors (3397446).

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

1634490 is a wasteful number, since it uses less digits than its factorization.

1634490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1634490 is about 1278.4717439193. The cubic root of 1634490 is about 117.7951535484.

The spelling of 1634490 in words is "one million, six hundred thirty-four thousand, four hundred ninety".