30200040 has 192 divisors, whose sum is σ = 110073600. Its totient is φ = 7402752.

The previous prime is 30200033. The next prime is 30200057. The reversal of 30200040 is 4000203.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 30199995 and 30200031.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126241 + ... + 126479.

It is an arithmetic number, because the mean of its divisors is an integer number (573300).

Almost surely, 2^30200040 is an apocalyptic number.

30200040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30200040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55036800).

30200040 is an abundant number, since it is smaller than the sum of its proper divisors (79873560).

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

30200040 is a wasteful number, since it uses less digits than its factorization.

30200040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 30200040 is about 5495.4563049851. The cubic root of 30200040 is about 311.4123554188.

Adding to 30200040 its reverse (4000203), we get a palindrome (34200243).

The spelling of 30200040 in words is "thirty million, two hundred thousand, forty".