61436480 has 56 divisors (see below), whose sum is σ = 167201088. Its totient is φ = 21063168.

The previous prime is 61436467. The next prime is 61436489. The reversal of 61436480 is 8463416.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (61436489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11474 + ... + 15953.

Almost surely, 2^61436480 is an apocalyptic number.

It is an amenable number.

61436480 is an abundant number, since it is smaller than the sum of its proper divisors (105764608).

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

61436480 is a wasteful number, since it uses less digits than its factorization.

61436480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27451 (or 27441 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 61436480 is about 7838.1426371303. The cubic root of 61436480 is about 394.5863961010.

Adding to 61436480 its reverse (8463416), we get a palindrome (69899896).

It can be divided in two parts, 61436 and 480, that added together give a palindrome (61916).

The spelling of 61436480 in words is "sixty-one million, four hundred thirty-six thousand, four hundred eighty".