101558428 has 6 divisors (see below), whose sum is σ = 177727256. Its totient is φ = 50779212.

The previous prime is 101558423. The next prime is 101558447. The reversal of 101558428 is 824855101.

It is a super-2 number, since 2×101558428² = 20628228595662368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101558393 and 101558402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101558423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12694800 + ... + 12694807.

Almost surely, 2^101558428 is an apocalyptic number.

It is an amenable number.

101558428 is a deficient number, since it is larger than the sum of its proper divisors (76168828).

101558428 is a wasteful number, since it uses less digits than its factorization.

101558428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25389611 (or 25389609 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 101558428 is about 10077.6201555724. The cubic root of 101558428 is about 466.5576591197.

The spelling of 101558428 in words is "one hundred one million, five hundred fifty-eight thousand, four hundred twenty-eight".