7242778620 has 480 divisors, whose sum is σ = 29256708096. Its totient is φ = 1455667200.

The previous prime is 7242778603. The next prime is 7242778639. The reversal of 7242778620 is 268772427.

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 159 ways as a sum of consecutive naturals, for example, 3866004 + ... + 3867876.

Almost surely, 2^7242778620 is an apocalyptic number.

7242778620 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 7242778620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14628354048).

7242778620 is an abundant number, since it is smaller than the sum of its proper divisors (22013929476).

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

7242778620 is a wasteful number, since it uses less digits than its factorization.

7242778620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943 (or 1932 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The square root of 7242778620 is about 85104.5158613807. The cubic root of 7242778620 is about 1934.7955075047.

The spelling of 7242778620 in words is "seven billion, two hundred forty-two million, seven hundred seventy-eight thousand, six hundred twenty".