30140400 has 60 divisors (see below), whose sum is σ = 96553592. Its totient is φ = 8037120.

The previous prime is 30140399. The next prime is 30140413. The reversal of 30140400 is 404103.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11359 + ... + 13758.

Almost surely, 2^30140400 is an apocalyptic number.

30140400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30140400 is an abundant number, since it is smaller than the sum of its proper divisors (66413192).

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

30140400 is a wasteful number, since it uses less digits than its factorization.

30140400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25138 (or 25127 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 30140400 is about 5490.0273223364. The cubic root of 30140400 is about 311.2072246502.

Adding to 30140400 its reverse (404103), we get a palindrome (30544503).

The spelling of 30140400 in words is "thirty million, one hundred forty thousand, four hundred".