61120380 has 24 divisors (see below), whose sum is σ = 171137232. Its totient is φ = 16298752.

The previous prime is 61120373. The next prime is 61120387. The reversal of 61120380 is 8302116.

It is an interprime number because it is at equal distance from previous prime (61120373) and next prime (61120387).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61120387) 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, 509277 + ... + 509396.

It is an arithmetic number, because the mean of its divisors is an integer number (7130718).

Almost surely, 2^61120380 is an apocalyptic number.

61120380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61120380 is an abundant number, since it is smaller than the sum of its proper divisors (110016852).

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

61120380 is a wasteful number, since it uses less digits than its factorization.

61120380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018685 (or 1018683 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 61120380 is about 7817.9524173533. The cubic root of 61120380 is about 393.9084965343.

Adding to 61120380 its reverse (8302116), we get a palindrome (69422496).

The spelling of 61120380 in words is "sixty-one million, one hundred twenty thousand, three hundred eighty".