30072738 has 32 divisors (see below), whose sum is σ = 61934400. Its totient is φ = 9729216.

The previous prime is 30072709. The next prime is 30072743. The reversal of 30072738 is 83727003.

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, 58828 + ... + 59336.

It is an arithmetic number, because the mean of its divisors is an integer number (1935450).

Almost surely, 2^30072738 is an apocalyptic number.

30072738 is an abundant number, since it is smaller than the sum of its proper divisors (31861662).

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

30072738 is a wasteful number, since it uses less digits than its factorization.

30072738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 30072738 is about 5483.8615956277. The cubic root of 30072738 is about 310.9741744390.

The spelling of 30072738 in words is "thirty million, seventy-two thousand, seven hundred thirty-eight".