61212480 has 112 divisors (see below), whose sum is σ = 222138240. Its totient is φ = 13989888.

The previous prime is 61212469. The next prime is 61212493. The reversal of 61212480 is 8421216.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 61212480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2166 + ... + 11274.

Almost surely, 2^61212480 is an apocalyptic number.

61212480 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 61212480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111069120).

61212480 is an abundant number, since it is smaller than the sum of its proper divisors (160925760).

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

61212480 is a wasteful number, since it uses less digits than its factorization.

61212480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9136 (or 9126 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 61212480 is about 7823.8404891715. The cubic root of 61212480 is about 394.1062525327.

Adding to 61212480 its reverse (8421216), we get a palindrome (69633696).

The spelling of 61212480 in words is "sixty-one million, two hundred twelve thousand, four hundred eighty".