61120320 has 56 divisors (see below), whose sum is σ = 194060064. Its totient is φ = 16298496.

The previous prime is 61120307. The next prime is 61120331. The reversal of 61120320 is 2302116.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 61120320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30874 + ... + 32793.

Almost surely, 2^61120320 is an apocalyptic number.

61120320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61120320 is an abundant number, since it is smaller than the sum of its proper divisors (132939744).

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

61120320 is a wasteful number, since it uses less digits than its factorization.

61120320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63687 (or 63677 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 61120320 is about 7817.9485800304. The cubic root of 61120320 is about 393.9083676383.

Adding to 61120320 its reverse (2302116), we get a palindrome (63422436).

The spelling of 61120320 in words is "sixty-one million, one hundred twenty thousand, three hundred twenty".