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1970274440 = 235311588931
BaseRepresentation
bin111010101110000…
…0000000010001000
312002022102022102102
41311130000002020
513013342240230
6523301452532
766553025231
oct16534000210
95068368372
101970274440
11921194392
1246ba11148
1325526a284
1414995c088
15b7e90045
hex75700088

1970274440 has 32 divisors (see below), whose sum is σ = 4576124160. Its totient is φ = 762686400.

The previous prime is 1970274433. The next prime is 1970274469. The reversal of 1970274440 is 444720791.

It is a junction number, because it is equal to n+sod(n) for n = 1970274394 and 1970274403.

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, 793226 + ... + 795705.

It is an arithmetic number, because the mean of its divisors is an integer number (143003880).

Almost surely, 21970274440 is an apocalyptic number.

1970274440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1970274440 is an abundant number, since it is smaller than the sum of its proper divisors (2605849720).

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

1970274440 is a wasteful number, since it uses less digits than its factorization.

1970274440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588973 (or 1588969 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 1970274440 is about 44387.7735418212. The cubic root of 1970274440 is about 1253.6478911563.

The spelling of 1970274440 in words is "one billion, nine hundred seventy million, two hundred seventy-four thousand, four hundred forty".

Divisors: 1 2 4 5 8 10 20 31 40 62 124 155 248 310 620 1240 1588931 3177862 6355724 7944655 12711448 15889310 31778620 49256861 63557240 98513722 197027444 246284305 394054888 492568610 985137220 1970274440