30051396 has 18 divisors (see below), whose sum is σ = 75963342. Its totient is φ = 10017120.

The previous prime is 30051379. The next prime is 30051397. The reversal of 30051396 is 69315003.

It can be written as a sum of positive squares in only one way, i.e., 18922500 + 11128896 = 4350^2 + 3336^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (30051397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 417345 + ... + 417416.

Almost surely, 2^30051396 is an apocalyptic number.

30051396 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30051396 is an abundant number, since it is smaller than the sum of its proper divisors (45911946).

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

30051396 is a wasteful number, since it uses less digits than its factorization.

30051396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834771 (or 834766 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 30051396 is about 5481.9153587045. The cubic root of 30051396 is about 310.9005930505.

Adding to 30051396 its reverse (69315003), we get a palindrome (99366399).

The spelling of 30051396 in words is "thirty million, fifty-one thousand, three hundred ninety-six".