61358028 has 12 divisors (see below), whose sum is σ = 143168760. Its totient is φ = 20452672.

The previous prime is 61357969. The next prime is 61358041. The reversal of 61358028 is 82085316.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 61358028.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2556573 + ... + 2556596.

It is an arithmetic number, because the mean of its divisors is an integer number (11930730).

Almost surely, 2^61358028 is an apocalyptic number.

It is an amenable number.

61358028 is an abundant number, since it is smaller than the sum of its proper divisors (81810732).

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

61358028 is a wasteful number, since it uses less digits than its factorization.

61358028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113176 (or 5113174 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 61358028 is about 7833.1365365350. The cubic root of 61358028 is about 394.4183673886.

The spelling of 61358028 in words is "sixty-one million, three hundred fifty-eight thousand, twenty-eight".