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30779996 = 22131734819
BaseRepresentation
bin111010101101…
…0101001011100
32010220210012212
41311122221130
530334424441
63015415552
7522424412
oct165325134
963823185
1030779996
1116413515
12a3845b8
1364b9020
1441332b2
152a7eeeb
hex1d5aa5c

30779996 has 24 divisors (see below), whose sum is σ = 61422480. Its totient is φ = 13370112.

The previous prime is 30779977. The next prime is 30780011. The reversal of 30779996 is 69997703.

It is a happy number.

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, 16526 + ... + 18293.

It is an arithmetic number, because the mean of its divisors is an integer number (2559270).

Almost surely, 230779996 is an apocalyptic number.

It is an amenable number.

30779996 is a deficient number, since it is larger than the sum of its proper divisors (30642484).

30779996 is a wasteful number, since it uses less digits than its factorization.

30779996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34853 (or 34851 counting only the distinct ones).

The product of its (nonzero) digits is 642978, while the sum is 50.

The square root of 30779996 is about 5547.9722421800. The cubic root of 30779996 is about 313.3931644711.

The spelling of 30779996 in words is "thirty million, seven hundred seventy-nine thousand, nine hundred ninety-six".

Divisors: 1 2 4 13 17 26 34 52 68 221 442 884 34819 69638 139276 452647 591923 905294 1183846 1810588 2367692 7694999 15389998 30779996