61428843 has 72 divisors (see below), whose sum is σ = 111422688. Its totient is φ = 31912704.

The previous prime is 61428833. The next prime is 61428863. The reversal of 61428843 is 34882416.

It is not a de Polignac number, because 61428843 - 2¹⁶ = 61363307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61428798 and 61428807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61428823) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 841455 + ... + 841527.

Almost surely, 2^61428843 is an apocalyptic number.

61428843 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

61428843 is a deficient number, since it is larger than the sum of its proper divisors (49993845).

61428843 is a wasteful number, since it uses less digits than its factorization.

61428843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 139 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 61428843 is about 7837.6554530038. The cubic root of 61428843 is about 394.5700454399.

The spelling of 61428843 in words is "sixty-one million, four hundred twenty-eight thousand, eight hundred forty-three".