153030440 has 32 divisors (see below), whose sum is σ = 344817000. Its totient is φ = 61123584.

The previous prime is 153030407. The next prime is 153030463. The reversal of 153030440 is 44030351.

It can be written as a sum of positive squares in 4 ways, for example, as 108701476 + 44328964 = 10426^2 + 6658^2 .

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

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29996 + ... + 34724.

Almost surely, 2^153030440 is an apocalyptic number.

153030440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

153030440 is an abundant number, since it is smaller than the sum of its proper divisors (191786560).

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

153030440 is a wasteful number, since it uses less digits than its factorization.

153030440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5549 (or 5545 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 153030440 is about 12370.5472797286. The cubic root of 153030440 is about 534.8835918741.

Adding to 153030440 its reverse (44030351), we get a palindrome (197060791).

The spelling of 153030440 in words is "one hundred fifty-three million, thirty thousand, four hundred forty".