30412240 has 40 divisors (see below), whose sum is σ = 72995328. Its totient is φ = 11771520.

The previous prime is 30412237. The next prime is 30412247. The reversal of 30412240 is 4221403.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30412247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3652 + ... + 8611.

Almost surely, 2^30412240 is an apocalyptic number.

It is an amenable number.

30412240 is an abundant number, since it is smaller than the sum of its proper divisors (42583088).

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

30412240 is a wasteful number, since it uses less digits than its factorization.

30412240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12307 (or 12301 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 30412240 is about 5514.7293677931. The cubic root of 30412240 is about 312.1400313782.

Adding to 30412240 its reverse (4221403), we get a palindrome (34633643).

It can be divided in two parts, 304 and 12240, that added together give a square (12544 = 112²).

The spelling of 30412240 in words is "thirty million, four hundred twelve thousand, two hundred forty".