861093420 has 48 divisors (see below), whose sum is σ = 2630251008. Its totient is φ = 208749760.

The previous prime is 861093413. The next prime is 861093421. The reversal of 861093420 is 24390168.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (861093421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 651684 + ... + 653003.

It is an arithmetic number, because the mean of its divisors is an integer number (54796896).

Almost surely, 2^861093420 is an apocalyptic number.

It is an amenable number.

861093420 is an abundant number, since it is smaller than the sum of its proper divisors (1769157588).

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

861093420 is a wasteful number, since it uses less digits than its factorization.

861093420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304710 (or 1304708 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 861093420 is about 29344.3933316060. The cubic root of 861093420 is about 951.3713969866.

The spelling of 861093420 in words is "eight hundred sixty-one million, ninety-three thousand, four hundred twenty".