61628430 has 32 divisors (see below), whose sum is σ = 148982400. Its totient is φ = 16314912.

The previous prime is 61628423. The next prime is 61628443. The reversal of 61628430 is 3482616.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3220 + ... + 11559.

It is an arithmetic number, because the mean of its divisors is an integer number (4655700).

Almost surely, 2^61628430 is an apocalyptic number.

61628430 is an abundant number, since it is smaller than the sum of its proper divisors (87353970).

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

61628430 is a wasteful number, since it uses less digits than its factorization.

61628430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14928.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 61628430 is about 7850.3776979200. The cubic root of 61628430 is about 394.9969128638.

The spelling of 61628430 in words is "sixty-one million, six hundred twenty-eight thousand, four hundred thirty".