61214320 has 40 divisors (see below), whose sum is σ = 143178336. Its totient is φ = 24338688.

The previous prime is 61214303. The next prime is 61214323. The reversal of 61214320 is 2341216.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61214323) 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, 11629 + ... + 16051.

Almost surely, 2^61214320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61214320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71589168).

61214320 is an abundant number, since it is smaller than the sum of its proper divisors (81964016).

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

61214320 is a wasteful number, since it uses less digits than its factorization.

61214320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4609 (or 4603 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 61214320 is about 7823.9580775973. The cubic root of 61214320 is about 394.1102013366.

Adding to 61214320 its reverse (2341216), we get a palindrome (63555536).

The spelling of 61214320 in words is "sixty-one million, two hundred fourteen thousand, three hundred twenty".