30143700 has 54 divisors (see below), whose sum is σ = 94486574. Its totient is φ = 8038080.

The previous prime is 30143653. The next prime is 30143723. The reversal of 30143700 is 734103.

It can be written as a sum of positive squares in 3 ways, for example, as 10536516 + 19607184 = 3246^2 + 4428^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15847 + ... + 17646.

Almost surely, 2^30143700 is an apocalyptic number.

30143700 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30143700 is an abundant number, since it is smaller than the sum of its proper divisors (64342874).

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

30143700 is a wasteful number, since it uses less digits than its factorization.

30143700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33513 (or 33503 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 30143700 is about 5490.3278590627. The cubic root of 30143700 is about 311.2185820128.

Adding to 30143700 its reverse (734103), we get a palindrome (30877803).

The spelling of 30143700 in words is "thirty million, one hundred forty-three thousand, seven hundred".