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74232980 = 22510136749
BaseRepresentation
bin1000110110010…
…11010010010100
312011200102111122
410123023102110
5123000423410
611211023112
71560653453
oct433132224
9164612448
1074232980
11389a2378
1220a3aa98
13124c1453
149c04b9a
1567b4e55
hex46cb494

74232980 has 24 divisors (see below), whose sum is σ = 157437000. Its totient is φ = 29398400.

The previous prime is 74232979. The next prime is 74232997. The reversal of 74232980 is 8923247.

It can be written as a sum of positive squares in 4 ways, for example, as 11062276 + 63170704 = 3326^2 + 7948^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 74232980.

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, 16355 + ... + 20394.

It is an arithmetic number, because the mean of its divisors is an integer number (6559875).

Almost surely, 274232980 is an apocalyptic number.

It is an amenable number.

74232980 is an abundant number, since it is smaller than the sum of its proper divisors (83204020).

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

74232980 is a wasteful number, since it uses less digits than its factorization.

74232980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36859 (or 36857 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 74232980 is about 8615.8563126366. The cubic root of 74232980 is about 420.2737821883.

The spelling of 74232980 in words is "seventy-four million, two hundred thirty-two thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 101 202 404 505 1010 2020 36749 73498 146996 183745 367490 734980 3711649 7423298 14846596 18558245 37116490 74232980