30145728783400 has 48 divisors (see below), whose sum is σ = 70103574066240. Its totient is φ = 12055753080000.

The previous prime is 30145728783367. The next prime is 30145728783487. The reversal of 30145728783400 is 438782754103.

It is a super-2 number, since 2×30145728783400² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14912634 + ... + 16813033.

It is an arithmetic number, because the mean of its divisors is an integer number (1460491126380).

Almost surely, 2^{30145728783400} is an apocalyptic number.

It is an amenable number.

30145728783400 is an abundant number, since it is smaller than the sum of its proper divisors (39957845282840).

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

30145728783400 is a wasteful number, since it uses less digits than its factorization.

30145728783400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31730434 (or 31730425 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 52.

The spelling of 30145728783400 in words is "thirty trillion, one hundred forty-five billion, seven hundred twenty-eight million, seven hundred eighty-three thousand, four hundred".