61267320 has 256 divisors, whose sum is σ = 223948800. Its totient is φ = 14837760.

The previous prime is 61267319. The next prime is 61267369. The reversal of 61267320 is 2376216.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 862885 + ... + 862955.

It is an arithmetic number, because the mean of its divisors is an integer number (874800).

Almost surely, 2^61267320 is an apocalyptic number.

61267320 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 61267320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111974400).

61267320 is an abundant number, since it is smaller than the sum of its proper divisors (162681480).

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

61267320 is a wasteful number, since it uses less digits than its factorization.

61267320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 61267320 is about 7827.3443772457. The cubic root of 61267320 is about 394.2239101075.

The spelling of 61267320 in words is "sixty-one million, two hundred sixty-seven thousand, three hundred twenty".