30040760 has 32 divisors (see below), whose sum is σ = 70532640. Its totient is φ = 11493504.

The previous prime is 30040757. The next prime is 30040763. The reversal of 30040760 is 6704003.

It is an interprime number because it is at equal distance from previous prime (30040757) and next prime (30040763).

It is a super-2 number, since 2×30040760² = 1804894522755200, which contains 22 as substring.

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 (30040763) 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, 15407 + ... + 17246.

It is an arithmetic number, because the mean of its divisors is an integer number (2204145).

Almost surely, 2^30040760 is an apocalyptic number.

It is an amenable number.

30040760 is an abundant number, since it is smaller than the sum of its proper divisors (40491880).

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

30040760 is a wasteful number, since it uses less digits than its factorization.

30040760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32687 (or 32683 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 30040760 is about 5480.9451739641. The cubic root of 30040760 is about 310.8639100192.

Adding to 30040760 its reverse (6704003), we get a palindrome (36744763).

The spelling of 30040760 in words is "thirty million, forty thousand, seven hundred sixty".