251632030 has 16 divisors (see below), whose sum is σ = 487779264. Its totient is φ = 92910240.

The previous prime is 251632027. The next prime is 251632037. The reversal of 251632030 is 30236152.

It is a junction number, because it is equal to n+sod(n) for n = 251631992 and 251632010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251632037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 967686 + ... + 967945.

It is an arithmetic number, because the mean of its divisors is an integer number (30486204).

Almost surely, 2^251632030 is an apocalyptic number.

251632030 is a deficient number, since it is larger than the sum of its proper divisors (236147234).

251632030 is a wasteful number, since it uses less digits than its factorization.

251632030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935651.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 251632030 is about 15862.9136667890. The cubic root of 251632030 is about 631.3283720620.

Adding to 251632030 its reverse (30236152), we get a palindrome (281868182).

The spelling of 251632030 in words is "two hundred fifty-one million, six hundred thirty-two thousand, thirty".