101858412 has 12 divisors (see below), whose sum is σ = 237669656. Its totient is φ = 33952800.

The previous prime is 101858389. The next prime is 101858423. The reversal of 101858412 is 214858101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 101858412.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4244089 + ... + 4244112.

Almost surely, 2^101858412 is an apocalyptic number.

101858412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101858412 is an abundant number, since it is smaller than the sum of its proper divisors (135811244).

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

101858412 is a wasteful number, since it uses less digits than its factorization.

101858412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8488208 (or 8488206 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 101858412 is about 10092.4928536016. The cubic root of 101858412 is about 467.0165813266.

The spelling of 101858412 in words is "one hundred one million, eight hundred fifty-eight thousand, four hundred twelve".