61913428 has 12 divisors (see below), whose sum is σ = 108803520. Its totient is φ = 30826712.

The previous prime is 61913407. The next prime is 61913443. The reversal of 61913428 is 82431916.

61913428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61913428² = 7666545133422368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61913393 and 61913402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31426 + ... + 33337.

It is an arithmetic number, because the mean of its divisors is an integer number (9066960).

Almost surely, 2^61913428 is an apocalyptic number.

It is an amenable number.

61913428 is a deficient number, since it is larger than the sum of its proper divisors (46890092).

61913428 is a wasteful number, since it uses less digits than its factorization.

61913428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65006 (or 65004 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 61913428 is about 7868.5086261629. The cubic root of 61913428 is about 395.6048587121.

The spelling of 61913428 in words is "sixty-one million, nine hundred thirteen thousand, four hundred twenty-eight".