1490240 has 28 divisors (see below), whose sum is σ = 3549396. Its totient is φ = 595968.

The previous prime is 1490233. The next prime is 1490243. The reversal of 1490240 is 420941.

It can be written as a sum of positive squares in 2 ways, for example, as 341056 + 1149184 = 584^2 + 1072^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2009 + ... + 2648.

2^1490240 is an apocalyptic number.

1490240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1490240 is an abundant number, since it is smaller than the sum of its proper divisors (2059156).

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

1490240 is an equidigital number, since it uses as much as digits as its factorization.

1490240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4674 (or 4664 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1490240 is about 1220.7538654454. The cubic root of 1490240 is about 114.2226080175. Note that the first 3 decimals are identical.

The spelling of 1490240 in words is "one million, four hundred ninety thousand, two hundred forty".