7275362640 has 640 divisors, whose sum is σ = 29096804352. Its totient is φ = 1463132160.

The previous prime is 7275362609. The next prime is 7275362663. The reversal of 7275362640 is 462635727.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 7275362592 and 7275362601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 57286257 + ... + 57286383.

Almost surely, 2^7275362640 is an apocalyptic number.

7275362640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7275362640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14548402176).

7275362640 is an abundant number, since it is smaller than the sum of its proper divisors (21821441712).

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

7275362640 is a wasteful number, since it uses less digits than its factorization.

7275362640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 42.

The square root of 7275362640 is about 85295.7363529972. The cubic root of 7275362640 is about 1937.6926051468.

The spelling of 7275362640 in words is "seven billion, two hundred seventy-five million, three hundred sixty-two thousand, six hundred forty".