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1420025240 = 23535500631
BaseRepresentation
bin101010010100011…
…1101110110011000
310122222000202102102
41110220331312120
510402011301430
6352524022532
750122005164
oct12450756630
93588022372
101420025240
11669626a87
12337691a48
1319827052a
14d6845ca4
15849ed345
hex54a3dd98

1420025240 has 16 divisors (see below), whose sum is σ = 3195056880. Its totient is φ = 568010080.

The previous prime is 1420025219. The next prime is 1420025311. The reversal of 1420025240 is 425200241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17750276 + ... + 17750355.

It is an arithmetic number, because the mean of its divisors is an integer number (199691055).

Almost surely, 21420025240 is an apocalyptic number.

1420025240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420025240 is an abundant number, since it is smaller than the sum of its proper divisors (1775031640).

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

1420025240 is a wasteful number, since it uses less digits than its factorization.

1420025240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35500642 (or 35500638 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1420025240 is about 37683.2222613725. Note that the first 4 decimals coincide. The cubic root of 1420025240 is about 1123.9975240887.

Adding to 1420025240 its reverse (425200241), we get a palindrome (1845225481).

The spelling of 1420025240 in words is "one billion, four hundred twenty million, twenty-five thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 20 40 35500631 71001262 142002524 177503155 284005048 355006310 710012620 1420025240