30764440 has 32 divisors (see below), whose sum is σ = 79109280. Its totient is φ = 10547712.

The previous prime is 30764413. The next prime is 30764443. The reversal of 30764440 is 4446703.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 30764399 and 30764408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30764443) 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, 54657 + ... + 55216.

It is an arithmetic number, because the mean of its divisors is an integer number (2472165).

Almost surely, 2^30764440 is an apocalyptic number.

It is an amenable number.

30764440 is an abundant number, since it is smaller than the sum of its proper divisors (48344840).

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

30764440 is a wasteful number, since it uses less digits than its factorization.

30764440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109891 (or 109887 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 30764440 is about 5546.5701113391. The cubic root of 30764440 is about 313.3403599853.

The spelling of 30764440 in words is "thirty million, seven hundred sixty-four thousand, four hundred forty".