30150920 has 16 divisors (see below), whose sum is σ = 67839660. Its totient is φ = 12060352.

The previous prime is 30150919. The next prime is 30150961. The reversal of 30150920 is 2905103.

It can be written as a sum of positive squares in 2 ways, for example, as 30052324 + 98596 = 5482^2 + 314^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30150892 and 30150901.

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, 376847 + ... + 376926.

Almost surely, 2^30150920 is an apocalyptic number.

It is an amenable number.

30150920 is an abundant number, since it is smaller than the sum of its proper divisors (37688740).

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

30150920 is a wasteful number, since it uses less digits than its factorization.

30150920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753784 (or 753780 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 30150920 is about 5490.9853396271. The cubic root of 30150920 is about 311.2434276554.

The spelling of 30150920 in words is "thirty million, one hundred fifty thousand, nine hundred twenty".