900740 has 24 divisors (see below), whose sum is σ = 1958040. Its totient is φ = 347648.

The previous prime is 900737. The next prime is 900743. The reversal of 900740 is 47009.

It is an interprime number because it is at equal distance from previous prime (900737) and next prime (900743).

It can be written as a sum of positive squares in 4 ways, for example, as 9604 + 891136 = 98^2 + 944^2 .

It is a super-2 number, since 2×900740² = 1622665095200, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (900743) 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 7 ways as a sum of consecutive naturals, for example, 197 + ... + 1356.

It is an arithmetic number, because the mean of its divisors is an integer number (81585).

2⁹⁰⁰⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

900740 is an abundant number, since it is smaller than the sum of its proper divisors (1057300).

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

900740 is a wasteful number, since it uses less digits than its factorization.

900740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591 (or 1589 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 900740 is about 949.0732321586. The cubic root of 900740 is about 96.5753927724.

Adding to 900740 its reverse (47009), we get a palindrome (947749).

The spelling of 900740 in words is "nine hundred thousand, seven hundred forty".