30400400 has 30 divisors (see below), whose sum is σ = 73037922. Its totient is φ = 12160000.

The previous prime is 30400351. The next prime is 30400417. The reversal of 30400400 is 400403.

It can be written as a sum of positive squares in 3 ways, for example, as 3857296 + 26543104 = 1964^2 + 5152^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37601 + ... + 38400.

Almost surely, 2^30400400 is an apocalyptic number.

It is an amenable number.

30400400 is an abundant number, since it is smaller than the sum of its proper divisors (42637522).

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

30400400 is a wasteful number, since it uses less digits than its factorization.

30400400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76019 (or 76008 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 30400400 is about 5513.6557745293. The cubic root of 30400400 is about 312.0995189871.

Adding to 30400400 its reverse (400403), we get a palindrome (30800803).

The spelling of 30400400 in words is "thirty million, four hundred thousand, four hundred".