30525890 has 8 divisors (see below), whose sum is σ = 54946620. Its totient is φ = 12210352.

The previous prime is 30525883. The next prime is 30525907. The reversal of 30525890 is 9852503.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26245129 + 4280761 = 5123^2 + 2069^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1526285 + ... + 1526304.

Almost surely, 2^30525890 is an apocalyptic number.

30525890 is a deficient number, since it is larger than the sum of its proper divisors (24420730).

30525890 is a wasteful number, since it uses less digits than its factorization.

30525890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052596.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 30525890 is about 5525.0239818484. The cubic root of 30525890 is about 312.5283686246.

The spelling of 30525890 in words is "thirty million, five hundred twenty-five thousand, eight hundred ninety".