30769040 has 40 divisors (see below), whose sum is σ = 72078720. Its totient is φ = 12214656.

The previous prime is 30769033. The next prime is 30769049. The reversal of 30769040 is 4096703.

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

It is a junction number, because it is equal to n+sod(n) for n = 30768994 and 30769012.

It is not an unprimeable number, because it can be changed into a prime (30769049) 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, 9737 + ... + 12503.

It is an arithmetic number, because the mean of its divisors is an integer number (1801968).

Almost surely, 2^30769040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30769040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36039360).

30769040 is an abundant number, since it is smaller than the sum of its proper divisors (41309680).

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

30769040 is a wasteful number, since it uses less digits than its factorization.

30769040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919 (or 2913 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 30769040 is about 5546.9847665196. The cubic root of 30769040 is about 313.3559764332.

The spelling of 30769040 in words is "thirty million, seven hundred sixty-nine thousand, forty".