1452990 has 128 divisors (see below), whose sum is σ = 4727808. Its totient is φ = 276480.

The previous prime is 1452977. The next prime is 1452991. The reversal of 1452990 is 992541.

It is a happy number.

It is a super-2 number, since 2×1452990² = 4222359880200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1452991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39252 + ... + 39288.

It is an arithmetic number, because the mean of its divisors is an integer number (36936).

2^1452990 is an apocalyptic number.

1452990 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 1452990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2363904).

1452990 is an abundant number, since it is smaller than the sum of its proper divisors (3274818).

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

1452990 is a wasteful number, since it uses less digits than its factorization.

1452990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1452990 is about 1205.4003484320. The cubic root of 1452990 is about 113.2628646897.

It can be divided in two parts, 1452 and 990, that added together give a palindrome (2442).

The spelling of 1452990 in words is "one million, four hundred fifty-two thousand, nine hundred ninety".