30440270 has 96 divisors (see below), whose sum is σ = 69242688. Its totient is φ = 9580032.

The previous prime is 30440269. The next prime is 30440287. The reversal of 30440270 is 7204403.

30440270 = 378² + 379² + ... + 525².

It is a happy number.

It is a super-2 number, since 2×30440270² = 1853220075345800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 416954 + ... + 417026.

It is an arithmetic number, because the mean of its divisors is an integer number (721278).

Almost surely, 2^30440270 is an apocalyptic number.

30440270 is an abundant number, since it is smaller than the sum of its proper divisors (38802418).

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

30440270 is a wasteful number, since it uses less digits than its factorization.

30440270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 30440270 is about 5517.2701583301. The cubic root of 30440270 is about 312.2358984641.

Adding to 30440270 its reverse (7204403), we get a palindrome (37644673).

The spelling of 30440270 in words is "thirty million, four hundred forty thousand, two hundred seventy".