61428590 has 16 divisors (see below), whose sum is σ = 112658688. Its totient is φ = 24107616.

The previous prime is 61428589. The next prime is 61428611. The reversal of 61428590 is 9582416.

It is a self number, because there is not a number n which added to its sum of digits gives 61428590.

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, 57422 + ... + 58481.

It is an arithmetic number, because the mean of its divisors is an integer number (7041168).

Almost surely, 2^61428590 is an apocalyptic number.

61428590 is a deficient number, since it is larger than the sum of its proper divisors (51230098).

61428590 is a wasteful number, since it uses less digits than its factorization.

61428590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115963.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 61428590 is about 7837.6393129564. The cubic root of 61428590 is about 394.5695037489.

The spelling of 61428590 in words is "sixty-one million, four hundred twenty-eight thousand, five hundred ninety".