864150420 has 144 divisors (see below), whose sum is σ = 2858696064. Its totient is φ = 191059200.

The previous prime is 864150407. The next prime is 864150499. The reversal of 864150420 is 24051468.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 402550 + ... + 404690.

It is an arithmetic number, because the mean of its divisors is an integer number (19852056).

Almost surely, 2^864150420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 864150420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1429348032).

864150420 is an abundant number, since it is smaller than the sum of its proper divisors (1994545644).

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

864150420 is a wasteful number, since it uses less digits than its factorization.

864150420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 864150420 is about 29396.4354982028. The cubic root of 864150420 is about 952.4959003964.

The spelling of 864150420 in words is "eight hundred sixty-four million, one hundred fifty thousand, four hundred twenty".