30526040 has 32 divisors (see below), whose sum is σ = 68841360. Its totient is φ = 12182400.

The previous prime is 30526019. The next prime is 30526043. The reversal of 30526040 is 4062503.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30526043) 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, 31970 + ... + 32910.

Almost surely, 2^30526040 is an apocalyptic number.

It is an amenable number.

30526040 is an abundant number, since it is smaller than the sum of its proper divisors (38315320).

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

30526040 is a wasteful number, since it uses less digits than its factorization.

30526040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763 (or 1759 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30526040 is about 5525.0375564334. The cubic root of 30526040 is about 312.5288805308.

Adding to 30526040 its reverse (4062503), we get a palindrome (34588543).

The spelling of 30526040 in words is "thirty million, five hundred twenty-six thousand, forty".