30740688 has 80 divisors (see below), whose sum is σ = 96273600. Its totient is φ = 9313920.

The previous prime is 30740639. The next prime is 30740707. The reversal of 30740688 is 88604703.

30740688 = 102² + 103² + ... + 453².

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1518 + ... + 7986.

It is an arithmetic number, because the mean of its divisors is an integer number (1203420).

Almost surely, 2^30740688 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 30740688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48136800).

30740688 is an abundant number, since it is smaller than the sum of its proper divisors (65532912).

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

30740688 is a wasteful number, since it uses less digits than its factorization.

30740688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6497 (or 6485 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 30740688 is about 5544.4285548648. The cubic root of 30740688 is about 313.2597000156.

The spelling of 30740688 in words is "thirty million, seven hundred forty thousand, six hundred eighty-eight".