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870912030 = 23529030401
BaseRepresentation
bin110011111010010…
…001000000011110
32020200202220201010
4303322101000132
53240423141110
6222230400050
730403426062
oct6372210036
92220686633
10870912030
1140767510a
12203800026
1310b580881
1483947aa2
15516d3020
hex33e9101e

870912030 has 16 divisors (see below), whose sum is σ = 2090188944. Its totient is φ = 232243200.

The previous prime is 870912017. The next prime is 870912041. The reversal of 870912030 is 30219078.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 29030401 = 870912030 / (8 + 7 + 0 + 9 + 1 + 2 + 0 + 3 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14515171 + ... + 14515230.

It is an arithmetic number, because the mean of its divisors is an integer number (130636809).

Almost surely, 2870912030 is an apocalyptic number.

870912030 is an abundant number, since it is smaller than the sum of its proper divisors (1219276914).

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

870912030 is a wasteful number, since it uses less digits than its factorization.

870912030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29030411.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 870912030 is about 29511.2187142449. The cubic root of 870912030 is about 954.9737408603.

The spelling of 870912030 in words is "eight hundred seventy million, nine hundred twelve thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 29030401 58060802 87091203 145152005 174182406 290304010 435456015 870912030