61200380 has 24 divisors (see below), whose sum is σ = 128996448. Its totient is φ = 24389568.

The previous prime is 61200371. The next prime is 61200389. The reversal of 61200380 is 8300216.

61200380 = T₁₆₅ + T₁₆₆ + ... + T₇₁₈.

It is an interprime number because it is at equal distance from previous prime (61200371) and next prime (61200389).

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 (61200389) 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, 17 + ... + 11063.

It is an arithmetic number, because the mean of its divisors is an integer number (5374852).

Almost surely, 2^61200380 is an apocalyptic number.

It is an amenable number.

61200380 is an abundant number, since it is smaller than the sum of its proper divisors (67796068).

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

61200380 is a wasteful number, since it uses less digits than its factorization.

61200380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11333 (or 11331 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 61200380 is about 7823.0671734301. The cubic root of 61200380 is about 394.0802828835.

Adding to 61200380 its reverse (8300216), we get a palindrome (69500596).

The spelling of 61200380 in words is "sixty-one million, two hundred thousand, three hundred eighty".