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1970489430 = 235572131967
BaseRepresentation
bin111010101110011…
…0100100001010110
312002022211020100000
41311130310201112
513013421130210
6523310232130
766554612100
oct16534644126
95068736300
101970489430
11921320968
1246bab5646
132553140a0
141499b6570
15b7ed3ac0
hex75734856

1970489430 has 576 divisors, whose sum is σ = 7110754560. Its totient is φ = 387991296.

The previous prime is 1970489413. The next prime is 1970489441. The reversal of 1970489430 is 349840791.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 29410257 + ... + 29410323.

It is an arithmetic number, because the mean of its divisors is an integer number (12345060).

Almost surely, 21970489430 is an apocalyptic number.

1970489430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1970489430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3555377280).

1970489430 is an abundant number, since it is smaller than the sum of its proper divisors (5140265130).

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

1970489430 is a wasteful number, since it uses less digits than its factorization.

1970489430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1970489430 is about 44390.1952011928. The cubic root of 1970489430 is about 1253.6934875044.

The spelling of 1970489430 in words is "one billion, nine hundred seventy million, four hundred eighty-nine thousand, four hundred thirty".