61441380 has 432 divisors, whose sum is σ = 260262912. Its totient is φ = 11404800.

The previous prime is 61441379. The next prime is 61441439. The reversal of 61441380 is 8314416.

61441380 is a `hidden beast` number, since 614 + 41 + 3 + 8 + 0 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1981965 + ... + 1981995.

Almost surely, 2^61441380 is an apocalyptic number.

61441380 is a gapful number since it is divisible by the number (60) 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 61441380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130131456).

61441380 is an abundant number, since it is smaller than the sum of its proper divisors (198821532).

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

61441380 is a wasteful number, since it uses less digits than its factorization.

61441380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 61441380 is about 7838.4552049495. The cubic root of 61441380 is about 394.5968861873.

Adding to 61441380 its reverse (8314416), we get a palindrome (69755796).

The spelling of 61441380 in words is "sixty-one million, four hundred forty-one thousand, three hundred eighty".