30640464 has 80 divisors (see below), whose sum is σ = 92603200. Its totient is φ = 9673344.

The previous prime is 30640453. The next prime is 30640469. The reversal of 30640464 is 46404603.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30640469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6342 + ... + 10074.

It is an arithmetic number, because the mean of its divisors is an integer number (1157540).

Almost surely, 2^30640464 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 30640464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46301600).

30640464 is an abundant number, since it is smaller than the sum of its proper divisors (61962736).

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

30640464 is a wasteful number, since it uses less digits than its factorization.

30640464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3769 (or 3757 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 30640464 is about 5535.3829135842. The cubic root of 30640464 is about 312.9188887057.

It can be divided in two parts, 3064046 and 4, that added together give a triangular number (3064050 = T₂₄₇₅).

The spelling of 30640464 in words is "thirty million, six hundred forty thousand, four hundred sixty-four".